Fuel Injected Harley Backfire

The end result will affect the fuel efficiency of your engine. Quick Fuel’s QFI is a bolt-on throttle body electronic fuel injection system capable of supporting 500 horsepower. ThunderMax claims to be the most powerful, self tuning fuel management system designed specifically for fuel injected Harley-Davidson motorcycles. What the motor is experiencing is that the fuel/air mixture is igniting while the intake valve is open- that's a backfire. how long did the bike sit? change the fuel filter. There can be several reasons for this. Afterfire occurs after the engine has been shut off. Poor batter charging 12. Buy a can of fuel-injection cleaner that goes into your gas tank. you say 2007, which would be fuel injected, you say “has a controller” which would be fuel injected. Excessive Backfiring on a Harley Davidson is typically restricted air and fuel flow. The fuel rail is a pipe that carries fuel to the injectors and to the cold start valve in the engine. 4L3V Lariat SCREW 10k miles on new motor. Question for those who have more mechanical knowledge than I do. For example, for a gasoline engine, an AFR of 16. Otherwise runs great. Dealer said buy the SE Race Tuner and Dyno it to fix. Let’s further explain these terms. The bike hasn't run since the fall. Bike is an 09 rocker c with literally 500 miles stock besides a stage 1. 2009 Kymco Venox 250 Fuel Injected – 2009 Kymco Venox 250 Fuel Injected. A clogged fuel filter can reduce both fuel delivery and fuel pressure. The intake system must be timed correctly so that it can feed fuel and air to the spark plugs at a proper rate. For those of you who haven't noticed or are stuck back in the 80's, a large number of the bikes coming from Milwaukee have fuel injection installed. That is to say combustion may be disrupted. 4L3V Lariat SCREW 10k miles on new motor. After last year's event got rained out AND cancelled, the LMC Truck Spring Lone Star Nationals saw the return of fans and show vehicles in force. This is usually not too bad when the tank is full, but when the fuel level drops, air is introduced into the system and thus the problems. Connect the fuel line hose to the fuel petcock. Treatment Recommendations. READ ALSO: Carburetor Vs Fuel Injection- Motorcycle Fuel Systems So in case of the closed loop Fi system, the oxygen sensor picks up the readings and relays it to the ECU and the ECU then according to the readings adapts the fuel injection levels to get the best result out of the bike. replaced: engine - heads were. Available in 255lph, 450lph, or 525lpl flow rates, these pumps are the perfect solution for EFI conversions and racecars alike. When I crack the throttle it accelerates quite well. Regardless of how it comes, the motorcycle backfire can be prevented in multiple ways. It works on any bike, no matter if it is a plain stock one, has a performance exhaust, and/or performance air cleaner or any other performance upgrade installed. 7:1 is rich. A simple way to test the battery terminal is to start the car when cold then immediately feel the battery terminals. Backfiring during acceleration can also be caused by internal carburetor problems, low compression, leaks in the fuel tank, lean engine conditions, and weak or broken valve springs. Shop the best Harley-Davidson Fat Boy Air Intake & Fuel Systems for your motorcycle at J&P Cycles. Replaced all orings along with injectors. Other causes of backfire are bad or weak fuel pumps, low fuel pressure, or clogged fuel filters. Another possible reason is a malfunctioning fuel pump or obstructed air filter. Here's what I have: ENGINE: 496 Cu. If you make a vehicle's pipes SHORT enough, with low enough back pressure on a bike (or car) it can suck enough air in to backfire even a fuel injected engine. But most forget that they will have to re-tune their motorcycles to avoid exhaust popping, spitting and backfiring. I personally love 'em. Excessive Backfiring on a Harley Davidson is typically restricted air and fuel flow. Backfiring usually occurs during acceleration or slowing downthese un-burnt gasses are ignited in the exhaust pipe, causing the backfire. what’s the other side of the bike look like, what exhaust are on it, it could be running ridiculously rich and backfiring unburnt fuel. Look in the Engine/Performance category for your model for pricing. Backfiring problems can also originate in the fuel system. Engine Misfires. It did not burn the plastic plenum, nor is any of the wiring melted. Outboard has poor deceleration 5. you say 2007, which would be fuel injected, you say "has a controller" which would be fuel injected. The only dead-accurate indicator of fuel level, the only true DEFCON 1 alarm of a critical shortage, is the sputter of the motor when the gas no longer rises above the main intake tube of the petcock. In this installment I'll cover the main items that comprise the condition that vexes so many of you: that pesky backfire. High performance V-twin engine, big cruiser looking, lightweight, stable and reasonable price, Venox 250 express a typical and outstanding big cruiser spirit. This can be accomplished with any aftermarket fuel processor such as a Dynojet Power Commander V, Vance & Hines FP3 FuelPak or a Cobra FI2000R PowrPro Black Fuel processor. Air leaks in vacuum lines, intake manifold gaskets, carburetor gaskets or the induction plumbing downstream of a fuel injection throttle can all admit extra air into the engine and lean out the fuel mixture. If the pressure regulator is. Terminology of "lean" and "rich" is only being used in air-fuel ratio. power is still ample and throttle response is pretty immediate in all riding conditions, to allow you to scoot away from stop lights, or make a quick pass on a two lane road, thanks in part to its Electronic Sequential Port Fuel Injection. See full list on hdforums. Reinstall the carburetor back on your bike by reversing the steps taken during removal. This is usually not too bad when the tank is full, but when the fuel level drops, air is introduced into the system and thus the problems. Follow along as we show you exactly how to install one. Backfiring is indicative of an electrical / ignition problem on your Harley Davidson. Chevy 350 Engine Specs The Chevy 350 engine is a 350 cubic inch (5. Let’s further explain these terms. Make Model Engine displacement Model year Country Engine type Info Fitment position Bike type; KTM: EXC 125: 125: 2010: ALL: 26 KW(35 PS) KTM: EXC 450: 449: 2010: ALL: KTM EXC-R. Highlight the zero percent column from 2,000 rpm to redline and enter in values from -40 to -50. The best way to avoid excessive backfiring on a Harley Davidson is the regular maintenance of the bike. All three of these issues have a direct effect on the air-to-fuel ratio. 4L3V Lariat SCREW 10k miles on new motor. The intake valves of course let air in, and the exhaust valves let exhaust air out. Low fuel pressure will reduce the fuel flow rate at the fuel injectors. The Fuel injection unit has an electrical pump which is pressurized so that the fuel can be injected easily and with force to make sure the amount of fuel is accurate. make: Harley. If you make a vehicle's pipes SHORT enough, with low enough back pressure on a bike (or car) it can suck enough air in to backfire even a fuel injected engine. MAP/Fuel Injection set up what works best I have a VTX 1800 S2 2006 with a MT kit, recently triked. chevy 350 popping through exhaust at idle, Computer-controlled emissions systems became standard on all Chevy 350 engines in the early 1980s, with throttle body fuel injection becoming standard around 1988. A clogged filter can restrict the flow of gas into the combustion chamber, leaving too much air to burn the fuel. Fuel injection took a 16-year hiatus and came back in a simplified form in ‘82 with the “Cross-Fire Injection” system that used two injectors and a simple computer to regulate the system. For those of you who haven't noticed or are stuck back in the 80's, a large number of the bikes coming from Milwaukee have fuel injection installed. Causes a serious drop in fuel pressure to the fuel rail (supply to the injectors resulting in seriously lean condition, low idle speed, popping rough running, dying at stops, popping on starts, etc. & check the sediment bowl (on bottom of carb) for water etc. It accurately adjusts the fuel-injected engines air/fuel ratio in order for it to run properly. what’s the other side of the bike look like, what exhaust are on it, it could be running ridiculously rich and backfiring unburnt fuel. , and many of the terms can make the event seem rather innocuous. The fuel pressure regulator relies on vacuum pressure generated by the engine to help maintain system pressure and predict what fuel demands are about to be placed on the fuel injection system. --Starts backfiring under a load at mid-high rpm's (while driving) Anyways - looking to replace this retainer tonight, but I am sure this is the cause of my issue as all other components checked out. Happy spring. Ext 580 efi settings 1989 Arctic Cat Cougar wire diagram arctic cat prowler 440 specs 1998 ZR 600 EFI fiche technique artic cat 440 jag 1998 powder special manual. Fuel/air is sucked in. I've read the unburnt fuel detonates in the header after being ejected from the exhaust. if it acts up again loosen the gas cap. Outboard has poor deceleration 5. This simple procedure is a great Harley tech tip that applies to all Harley carbs from 1989 to present that use the CV style Harley Davidson carburetor. Ways to Prevent Motorcycle Backfires. chevy 350 popping through exhaust at idle, Computer-controlled emissions systems became standard on all Chevy 350 engines in the early 1980s, with throttle body fuel injection becoming standard around 1988. Fuel-injected models may work well with up to a half point higher mechanical compression than the values listed above. 7-liter) small block V8 with a 4. The 4 stroke engine, (Of which a Harley is), has these four strokes. I have timing plug and plugs out. 5:1 is lean and 13. 2004 - 2008 F150 - Hesitate and backfire light to heavy acceleration - 2005 F150 5. The motorcycle has a full “open loop” fuel injection map written in its ECU and the motorcycle reverts to this default map after the oxygen sensors have been removed and disconnected. Regardless of how it comes, the motorcycle backfire can be prevented in multiple ways. Most people I help, don't know how to tune the idle area of the Fuel Table especially the Commander 950 EFI. Fuel injected models may have perfect AFR curves but still suffer mid-range torque loss without optimized exhaust tuning. 2005 vitory vegas 8 ball fuel injectors, 2008 victory backfires, 2009 victory hammer backfire, kevinx power commander maps, popping back through exhaust 2003 victory v92, reasons for victory hammer with ground pounders backfires bad on decel, victory 100ci mpg is down backfires, victory hammer exhaust popping and backfiring, victory motorcycles. If it's equipped with a carb, remove the air cleaner cover and look at the square top on the carb. Air, Fuel and Spark are needed in proper amounts at the proper time. if it dont hum or prime,it aint going to start. Remove the other end of the fuel line by pushing down on the blue release while gently pulling on the hose. Pressure comes from fuel pump, but fuel leaks back ingto the tank, so it hides. And, if you don’t find what you want below, Google is your friend. FAST's EZ-EFI Self-Tuning Fuel Injection Kits are the worlds simplest fuel injection system on the market today. Engine Misfires. For those of you who haven't noticed or are stuck back in the 80's, a large number of the bikes coming from Milwaukee have fuel injection installed. Dyno differences. We show you how to diagnose and repair your Harley Davidson motorcycle's Delphi fuel injection system when you have stalling problems from loss of fuel pressure. Harley used the 96-incher on 2010 and 2011 models, but bumped up to the 103” last year. In this installment I'll cover the main items that comprise the condition that vexes so many of you: that pesky backfire. Without it, the mixture would cool enough not to explode. Removed injection module and intake. Harley-Davidson Honda Polaris Yamaha Kawasaki Suzuki Can-Am BMW Ski-Doo Arctic Cat Popular Specs 2006 FLHX Street Glide 2013 MXZ 600 Sport 2015 Raider 800 (4X4) 2019 150 XC-W 2016 FE 350 S 2005 C50 Boulevard 1999 Sportsman 500 (4X4) 2005 KAF620E5 Mule 3010 (4X4) 2006 CW-11 (4X2) 2004 TRX450FE4 FourTrax Foreman (Electric Start). The top section of the regulator is connected by a small vacuum hose, while a large return hose is connected to its side. A fuel pressure regulator is used to maintain steady fuel supply, even during dramatic changes in fuel demand. 4L3V Lariat SCREW 10k miles on new motor. replaced diaphragm. Start the engine, and let it run out of fuel. You can also take a cotton rag and catch some gas in it. how long did the bike sit? change the fuel filter. STA-BIL fuel additives are the official fuel treatment of all Briggs & Stratton. Excessive fuel pressure will push extra fuel past the fuel injector even if the computer has shorted the pintle valve duration. An important part of the system was the actual fuel injectors. Invented, engineered, and made in the USA, ProCharger provides the most power per pound of boost for automotive, truck, SUV, off-road, sport compact, motorcycle, UTV, and mari. The mighty Harley is slowly loosing its carburetor. Engine misfire – poor air/fuel mixture in the cylinders can cause an incomplete combustion event. 2004 - 2008 F150 - Hesitate and backfire light to heavy acceleration - 2005 F150 5. A motorcycle backfire happens because of the presence of uncombusted fuel in the exhaust pipe. But when a fuel injector cracks or breaks, replacement is necessary and it can be expensive. if your spark will jump 35-45K. Available in 255lph, 450lph, or 525lpl flow rates, these pumps are the perfect solution for EFI conversions and racecars alike. Otherwise runs great. This issue is caused by: Incorrect timing; Too much fuel; Loose exhaust pipe; Too short of exhaust; Too little fuel; Intermittent spark; I have worked on dozens of motorcycles over the years and backfire issues seem to come around every once in a while. This problem is not just common to the 2007 Harley-Davidson's. He said it was sucking air. Poor batter charging 12. The intake system must be timed correctly so that it can feed fuel and air to the spark plugs at a proper rate. That's just one of the Dr. Your Road King has one camshaft. Before fuel injection, big twins would always backfire and pop and fart when the rider rolled off the throttle. 1% means reduce the pulse width by 99%, to 1% of what it normally would be. Fuel injected? Likely a pin hole in the fuel line, inside the tank, from rubbing. Holley In-Tank Retro-Fit Fuel Modules make adding a high-pressure, EFI-ready fuel pump to your factory gas tank extremely easy. I have replaced exhaust gaskets twice. The backfire is just a symptom of the problem. see if that helps use some 93 octane fuel,spark plugs is wrong range. Get free shipping, 4% cashback and 10% off select brands with a Gold Club membership, plus free everyday tech support on aftermarket Harley-Davidson Fat Boy Air Intake & Fuel Systems & motorcycle parts. I have a 2001 Road King, fuel injection. Usually, when an injector clogs or wears out, causing the air-fuel mixture to lean, the combustion process weakens and fails to properly burn the fuel. The Fuel injection unit has an electrical pump which is pressurized so that the fuel can be injected easily and with force to make sure the amount of fuel is accurate. Popping/backfiring 2 years 11 backfires on decel and its fuel injected. He said it was sucking air. The bike hasn't run since the fall. In the older system, fuel travels from the gas tank to the fuel rail using the fuel pump. The heat from the pipes then ignites the vapor and boom, backfire. When it is running lean, there is more air than fuel. I'm re-installing an Ultima ignition. Yamaha Outboard is overheating, overheats over heats, running hot 8. The 4 stroke engine, (Of which a Harley is), has these four strokes. The mighty Harley is slowly loosing its carburetor. Backfiring happens all the time, in cars and bikes, you just don't hear it because the muffler/exhaust. Harley misses at idle, and loses power while riding at a even throttle. A malfunctioning CKP can cause the engine to backfire due to. Backfiring can also be from a dead short on the ignition circuit. Make Model Engine displacement Model year Country Engine type Info Fitment position Bike type; KTM: EXC 125: 125: 2010: ALL: 26 KW(35 PS) KTM: EXC 450: 449: 2010: ALL: KTM EXC-R. Single fire ignitions only fire a spark plug when the cylinder is filled, compressed and ready. The fuel rail is a pipe that carries fuel to the injectors and to the cold start valve in the engine. Backfiring during acceleration can also be caused by internal carburetor problems, low compression, leaks in the fuel tank, lean engine conditions, and weak or broken valve springs. I personally love 'em. For those of you who haven't noticed or are stuck back in the 80's, a large number of the bikes coming from Milwaukee have fuel injection installed. Bike is an 09 rocker c with literally 500 miles stock besides a stage 1. if your spark will jump 35-45K. The Wiseco Fuel Management Controller is just the next logical step if you want to get the most out of upgrades, in this case, adjusting the amount of fuel being delivered. Decel pop code on my VFC lll units add a certain amount of fuel back at the injector to control a lean backfire from instant fuel shut off. In a port-injected engine, air travels down the port and mixes with fuel from the injector, spraying onto the intake valve which opens into the combustion chamber. Other common "dealership level" dynamometers are descended from heavy, slow reacting inertia dynos that have inflated, untrue HP numbers. Fixed Price $ 217. Zip ties and one Velcro strip note: standard models not legal for operation on public highways in the state of California air resources board Rab does permit use aftermarket emission-related parts that alter fuel ratio an emission-controlled vehicle. Take a look at some of the highlights from the show!. READ ALSO: Carburetor Vs Fuel Injection- Motorcycle Fuel Systems So in case of the closed loop Fi system, the oxygen sensor picks up the readings and relays it to the ECU and the ECU then according to the readings adapts the fuel injection levels to get the best result out of the bike. In theory Harley's fuel injection system is still an open-loop system by design. a dirty or clogged strainer on pump will make a pump work to hard and will kill it over time,maybe not just quit,but will go out over time. Sea Foam works to stabilize stored fuel up to 2 years. This difference causes backfire in the exhaust. Resolving the problem: Thanks to Stan Lass from DynoJet, the problem was quick to resolve. A leak in the air injection system can also cause the intake to backfire, since this affects the amount of air taken in. • Increases horsepower and torque by optimizing stock lean air/fuel mixtures. Better throttle response, no backfiring, and smoother cruising are just a few of the areas improved by the Fi2000. If you are not getting any DTC's (diagnostic trouble codes) other than the temp. When stabilizing fuel for storage, use 1 (one) ounce per gallon of fuel. Be sure to replace the fuel hose clamp, cables, and vacuum lines in the exact same location. a temp sensor will cause the bike to run rich or lean, but not to the extreme that you are describing. The issue is the fuel line inside of the tank 'rubs' on the inside of the tank from engine vibration. So I decided to purchase a fuel injection system instead. Your Road King has one camshaft. The truth is, under moderate to high loads consistent knock counts can cause catastrophic engine failure, usually in the form of crushed rod bearings, cracked ringlands, or a hole in your piston. It will automatically tune your engine for maximum performance – no Dyno required – for any. Yesterday as I was coming back from a long ride and the bike started sputtering with an occasional backfire. 4L3V Lariat SCREW 10k miles on new motor. Backfire is, generally caused by to much advance, and an after fire is to rich for the timing, or a near flooded condition. Too much unburned fuel then enters the exhaust system where the fuel ignites with a loud bang. Happy spring. Fuel injection took a 16-year hiatus and came back in a simplified form in ‘82 with the “Cross-Fire Injection” system that used two injectors and a simple computer to regulate the system. Chevy 350 Engine Specs The Chevy 350 engine is a 350 cubic inch (5. '05 VRSCB,Sundowner seat with pillon,chrome side covers,chrome switch housings,chrome fuel cell covers,chrome brake/clutch resevoir covers,chrome engine kit,luggage rack,chrome swingarm,chrome upper/lower belt covers,pivot covers,chrome rear slotted wheel and pully,chrome girly hand levers,kuryakin grips,Avon Cobra's 200mm rear,power commander III with SE slip-ons and SE airfilter,and more chrome. Harley Davidson's are the top of the line when made in the USA. Which is why I'm here. Without accurate timing information fuel injection will have incorrect sensor (CKP) readings. TorqueTuning is the most effective way to move the power band of your Harley to where you ride. Great sound. The bike hasn't run since the fall. Outboard has poor deceleration 5. Other causes of backfire are bad or weak fuel pumps, low fuel pressure, or clogged fuel filters. Invented, engineered, and made in the USA, ProCharger provides the most power per pound of boost for automotive, truck, SUV, off-road, sport compact, motorcycle, UTV, and mari. A fuel pressure regulator is used to maintain steady fuel supply, even during dramatic changes in fuel demand. When it is running lean, there is more air than fuel. Since electronic fuel injection (EFI) appeared on Harley-Davidson baggers in 1995, for many of us, the thought of a computer replacing the carburetor’s gas and air mixing duties has been a difficult proposition. Highlight the zero percent column from 2,000 rpm to redline and enter in values from -40 to -50. Check to see if the jets are clogged with debris or thick "gunk" that's causing your motorcycle to backfire. Part of this was caused by the fact that both spark plugs were firing and one of them was firing a waste spark on the exhaust exhaust stroke. A lower-grade fuel may also result in excessive backfiring on a Harley. The airflow into the motorcycle is increased because of the difference in pipe design and other specifics. Replaced all orings along with injectors. Quick Fuel’s QFI is a bolt-on throttle body electronic fuel injection system capable of supporting 500 horsepower. Call a GMan Tech now: (855) 864-4626. The only dead-accurate indicator of fuel level, the only true DEFCON 1 alarm of a critical shortage, is the sputter of the motor when the gas no longer rises above the main intake tube of the petcock. - Answered by a verified Motorcycle Mechanic. Bike is an 09 rocker c with literally 500 miles stock besides a stage 1. Fuel/air is sucked in. Connect the fuel line hose to the fuel petcock. Before fuel injection, big twins would always backfire and pop and fart when the rider rolled off the throttle. If you make a vehicle's pipes SHORT enough, with low enough back pressure on a bike (or car) it can suck enough air in to backfire even a fuel injected engine. Yamaha Outboard engine stalls 4. When stabilizing fuel for storage, use 1 (one) ounce per gallon of fuel. Pressure comes from fuel pump, but fuel leaks back ingto the tank, so it hides. When the engine on your motorcycle has an emission system malfunction, such as an exhaust leak or a moment of running rich or running lean, backfire can occur. A pressure switch on the transmission also has to come into play. In newer motorcycle models, this could be a problem with the fuel injection system. I have been told to get the best performance I need to add either a Dynojet- PC3 or Arlen Ness Cheap Shot, along with an Arlen Ness Big Sucker and a Bartons Reid Valve Fuel block. Buy Cobra 07-13 Harley XL1200C FI2000R Digital Fuel Processor: Jets & Jet Kits - FREE DELIVERY possible on eligible purchases. Nearly every fuel-injected motorcycle can benefit from the installation of the Fi2000R. The backfire is just a symptom of the problem. I followed the supplied instructions and the bike will start but backfires largely out of the front cylinder and runs rough. Get free shipping, 4% cashback and 10% off select brands with a Gold Club membership, plus free everyday tech support on aftermarket Harley-Davidson Fat Boy Air Intake & Fuel Systems & motorcycle parts. Highlight the zero percent column from 2,000 rpm to redline and enter in values from -40 to -50. Now bike runs great. Take a look at some of the highlights from the show!. Ensure you have good fresh gas and that there is fuel flow from the tank, as there may be an internal screen in the tank plugged. Run the bike and see if the popping has reduced. 95) is sold separately. All fuel injection systems turn off the fuel during deceleration when the throttle is fully closed, then turns the fuel back on down to idle once the engine reaches a predetermined r. Harley misses at idle, and loses power while riding at a even throttle. 0 & Blacktop Media! Posted on April 7, 2014 by Justin Bond. power is still ample and throttle response is pretty immediate in all riding conditions, to allow you to scoot away from stop lights, or make a quick pass on a two lane road, thanks in part to its Electronic Sequential Port Fuel Injection. The GM LS engine has a bit of a mythos about it. all cars today are fuel injected and the fuel supply today is formulated for that purpose. While the market is awash with bolt-on EFI systems, QFI is different: It combines the superior fuel atomization aspects of a carburetor with the precise fuel control of EFI. Your ride has the later Delphi injection system, and it can be set up to run better than any carb by a competent tuner using SERT, PCIII, DTT, ect. I followed the supplied instructions and the bike will start but backfires largely out of the front cylinder and runs rough. (Constant Velocity Carb) works from air flow entering the venturi of the carb to raise or lower the slide as appose to a manual opening of the slide. Take a look at some of the highlights from the show!. Together with the unburned fuel in the exhaust system and an open exhaust, the sparking results in the explosion associated with backfires. An after-fire takes places in the exhaust when the vavle opens before the combustion is complete and burning fuel gets into the pipe. Terminology of "lean" and "rich" is only being used in air-fuel ratio. In newer motorcycle models, this could be a problem with the fuel injection system. It accurately adjusts the fuel-injected engines air/fuel ratio in order for it to run properly. If the pressure regulator is. Fuel injected? Likely a pin hole in the fuel line, inside the tank, from rubbing. Ongoing problem: Will often hesitate and sometime backfire through intake manifold - especially if cruising then coast, then hitting gas (kinda like when merging). By reading manifold pressure or vacuum, the regulator will keep the fuel pressure constant regardless of how much fuel is being drawn from the. Rough Idle. Sucking fuel like a Windex spray bottle (how a carb works) is not enough to create a 14. The top section of the regulator is connected by a small vacuum hose, while a large return hose is connected to its side. This can be accomplished with any aftermarket fuel processor such as a Dynojet Power Commander V, Vance & Hines FP3 FuelPak or a Cobra FI2000R PowrPro Black Fuel processor. The Web's most trusted source for Harley-Davidson Heritage Softail Classic Fuel Injection. A pressure switch on the transmission also has to come into play. Just to the right of that cover is a screw, the throttle stop screw. Example can be faulty fuel pressure regulator causing too high fuel pressure. The fuel pump is a device that moves fuel from your tank to the engine, supplying the fuel at a constant pressure to ensure that your engine runs smoothly. how long did the bike sit? change the fuel filter. Shop the best Harley-Davidson Fat Boy Air Intake & Fuel Systems for your motorcycle at J&P Cycles. Nearly every fuel-injected motorcycle can benefit from the installation of the Fi2000R. Few motorcycles are more elemental than the 2017 Harley-Davidson Sportster Iron 883. The 4 stroke engine, (Of which a Harley is), has these four strokes. I installed Vance and Hines led fuel pak. American Micro-Fuel's mission is to bring all riders of any fuel injected motorcycle the means to a more luxurious ride, the power their bike is. Follow along as we show you exactly how to install one. That's just one of the Dr. Get expert advice on Motorcycle FI Controller Modules. Dyna Glide Models - 2003 fxd carb questions - Hey everyone total rookie here with a carbed bike picked it up in December and it's finally warm to drive it. replaced: engine - heads were. There are many possibilities that can explain this including problems with throttle cable adjustment, Throttle Position Sensor among others. Make certain the carb firmly seats back onto the manifold boot as a proper seal is critical. Ongoing problem: Will often hesitate and sometime backfire through intake manifold - especially if cruising then coast, then hitting gas (kinda like when merging). THUNDERMAX FUEL INJECTION. 12-spoke wheels evoke a thick spoke look, but carry modern tubeless radial tires; a 130/70-18 front and a fat 190/60-17 rear. Usually a failing ECM will only leave you without correct spark. If backfiring is only present at lower rpm, this shows that the injectors are working properly and fuel is igniting in the exhaust due to the oxygen present. Regular maintenance includes cleaning the carburetor and the fuel injector nozzles. It reduces the amount of fuel injected when the TPS (and/or MAP) are decreasing. 2004 - 2008 F150 - Hesitate and backfire light to heavy acceleration - 2005 F150 5. Backfiring that results from damaged wiring disrupts the ignition’s timing, which causes a build-up of air and fuel in the engine. Dirty, clogged, blocked, leaking or generally faulty fuel injectors have the following symptoms: Engine stutter, hesitation, stumbling – without the proper air/fuel mixture, the combustion inside the cylinders is impeded. 7:1 is rich. '05 VRSCB,Sundowner seat with pillon,chrome side covers,chrome switch housings,chrome fuel cell covers,chrome brake/clutch resevoir covers,chrome engine kit,luggage rack,chrome swingarm,chrome upper/lower belt covers,pivot covers,chrome rear slotted wheel and pully,chrome girly hand levers,kuryakin grips,Avon Cobra's 200mm rear,power commander III with SE slip-ons and SE airfilter,and more chrome. Excessive fuel pressure will push extra fuel past the fuel injector even if the computer has shorted the pintle valve duration. A simple way to test the battery terminal is to start the car when cold then immediately feel the battery terminals. Causes a serious drop in fuel pressure to the fuel rail (supply to the injectors resulting in seriously lean condition, low idle speed, popping rough running, dying at stops, popping on starts, etc. As a result, leading to spark timing and fuel injection errors. But most forget that they will have to re-tune their motorcycles to avoid exhaust popping, spitting and backfiring. Holley In-Tank Retro-Fit Fuel Modules make adding a high-pressure, EFI-ready fuel pump to your factory gas tank extremely easy. If it is an exhaust valve, it will backfire through the tailpipe. If you make a vehicle's pipes SHORT enough, with low enough back pressure on a bike (or car) it can suck enough air in to backfire even a fuel injected engine. If the fuel injectors are not operating properly, then other parts of the engine will be affected as well. This will clean out debris and dirt from the tank that's getting into your fuel line. Rode into town the day after Galena. 0 & Blacktop Media! Posted on April 7, 2014 by Justin Bond. Now bike runs great. But when a fuel injector cracks or breaks, replacement is necessary and it can be expensive. If you ride a fuel-injected Harley-davidson motorcycle, one solution is to install a Thundermax self-tuning fuel management system. Drain some fuel into a glass container and look for water at the bottom. Outboard has poor deceleration 5. This explosion can bend the throttle actuator plate, push intake gaskets outward creating a vacuum leak and even blown apart a plastic intake manifold. Stripped down to the basics, it’s a traditional motorcycle that is part cruiser and part retro sport bike. - Answered by a verified Motorcycle Mechanic. The top section of the regulator is connected by a small vacuum hose, while a large return hose is connected to its side. The fuel pressure regulator regulates the fuel pressure against the air pressure/boost, this leads to that the fuel injector can maintain the perfect ratio between fuel and boost. On a street bike, the rule of thumb is to adjust the fuel mixture screw out in ½ turn increments to add fuel. MOTO 7000TW Universal Motorcycle Scan Tool Description: MOTO 7000TW scanner allows the technician to diagnose, adjust, and reset key systems on all major motorcycle brands, including Honda, Harley-Davidson, BMW, Kawasaki, Yamaha. A fuel pressure regulator is used to maintain steady fuel supply, even during dramatic changes in fuel demand. Fuel Injected Models Diagnostic codes retrieval NOTE Diagnostic codes can only be cleared by a Harley-Davidson dealership. Backfiring problems can also originate in the fuel system. If your fuel injectors are clogged up and not sending enough fuel into the intake of your engine this can also be a cause for your engine to backfire. The backfiring during acceleration is a serious engine related (cam timing, bad valve seat seal, etc. same with fuel filter,if it is dirty,fuel pump works harder. hows the battery. Too much unburned fuel then enters the exhaust system where the fuel ignites with a loud bang. Chevy 350 Engine Specs The Chevy 350 engine is a 350 cubic inch (5. They were the FL-series Touring bikes and fuel injection was an option. Compare Harley-Davidson Street Rod Vs Royal Enfield Bullet 350 to know which is better. Most people I help, don't know how to tune the idle area of the Fuel Table especially the Commander 950 EFI. This is it…. Harley Davidson 61395-14DST 61348-07 Fuel Injected Tank XL883N fits model: Sportster. The leak itself is the most dangerous aspect. Backfiring can also be from a dead short on the ignition circuit. These items are… FUEL - In this case gasoline. Yesterday as I was coming back from a long ride and the bike started sputtering with an occasional backfire. Push up on the chrome sleeve on the gas tank, while gently pulling down on the fuel line. Remove the front plug and bike dies. If backfiring is only present at lower rpm, this shows that the injectors are working properly and fuel is igniting in the exhaust due to the oxygen present. Your Price: $236. Bikes comes setup so that the carburetor (or fuel injection system on modern bikes) provides the correct ratio of fuel and air, to allow the bike to run at its best. The “Harley Tax” is the cost that many choose to pay to get their Sportsters or other Harleys running as they should’ve come from the factory, were it not from the government trying to save us from. The issue is the fuel line inside of the tank 'rubs' on the inside of the tank from engine vibration. Cobra's Fi2000R uses proven technology to give riders a simple, easy to install and adjust digital fuel-injection tuner. Backfiring problems can also originate in the fuel system. Fuel injected models may have perfect AFR curves but still suffer mid-range torque loss without optimized exhaust tuning. Backfiring that results from damaged wiring disrupts the ignition’s timing, which causes a build-up of air and fuel in the engine. Excessive fuel generates higher hydrocarbon (HC) and carbon monoxide (CO) emissions, while insufficient fuel may lead to higher nitrogen oxide (NO x) emissions. How to Stop a Motorcycle From Backfiring Use a higher-grade fuel for a while to help clean your fuel tank. , while the engine is running or while shutting down. The best way to avoid excessive backfiring on a Harley Davidson is the regular maintenance of the bike. For 2-stroke pre-mix, add 2 ounces per gallon. 。 Better throttle response, no backfiring, and smoother. The Base Fuel Table should not be totally flat (except in the Fuel Graph); meaning you can't have the same numbers in the idle area. hows the battery. Run the bike and see if the popping has reduced. Compression Stroke. The added air at the wrong time cause a backfire, when you let off the throttle. When a motorcycle engine has an emission system malfunction, such as an exhaust leak or a moment of running rich or running lean, backfire occurs as a result. Relatively newer models do not typically backfire; the ones that do are engineered to do so, like drag racers that you see on Top Fuel. The motorcycle has a full “open loop” fuel injection map written in its ECU and the motorcycle reverts to this default map after the oxygen sensors have been removed and disconnected. I've read the unburnt fuel detonates in the header after being ejected from the exhaust. This simple procedure is a great Harley tech tip that applies to all Harley carbs from 1989 to present that use the CV style Harley Davidson carburetor. Bike began to idle really fast. A simple way to test the battery terminal is to start the car when cold then immediately feel the battery terminals. Make sure there are no broken circuits anywhere between the fuel pump and relay. A malfunctioning CKP can cause the engine to backfire due to. All three of these issues have a direct effect on the air-to-fuel ratio. This will clean out debris and dirt from the tank that's getting into your fuel line. The fuel pressure regulator regulates the fuel pressure against the air pressure/boost, this leads to that the fuel injector can maintain the perfect ratio between fuel and boost. Excessive Backfiring on a Harley Davidson is typically restricted air and fuel flow. Although there is some quality fuel injection cleaners that might help to keep your fuel injectors in good shape the only true and tested way to clean fuel injectors properly are and have always been to do it outside the engine and with the proper cleaning equipment. LEARN MORE. The CKP sends data to the motorcycle computer data center about the position and speed of the crankshaft, the ignition and fuel injection. Likewise a leak in the exhaust system will provide the necessary oxygen in the moments before and after deleceration fuel cut engages/disengages. A cable kit (P/N 32184-08, $39. Carbureted Harley Won T Start. Let the House of Harley-Davidson, Milwaukee's oldest Harley dealer, give you the best Harley-Davidson experience of your life!. If the pressure regulator is. Harley Davidson Manuals 1340 Evo - trumpetmaster. I followed the supplied instructions and the bike will start but backfires largely out of the front cylinder and runs rough. I took it into a shop to have the valves adjusted, new piston, and new gaskets put in. Regular maintenance includes cleaning the carburetor and the fuel injector nozzles. Article courtesy of American Iron Magazine The Harley-Davidson ESPFI system is known as a Speed/Density, Open Loop, Sequential Port Fuel Injection system, that controls both fuel flow, and spark timing. Which starts quicker, a Carb bike or a Fuel Injected bike. Nightster with a 883r tank. Even though there may be no codes or even pending codes, your scan tool can still point you in the right direction if you see combined fuel trim. Make Model Engine displacement Model year Country Engine type Info Fitment position Bike type; APRILIA: RXV 450 4. Decel pop is a fairly common issue when you start modifying the intake and exhaust on fuel injected motorcycles. Usually a failing ECM will only leave you without correct spark. Put the Avenger back on and it went like crap. Your Price: $236. A full-fledged fuel-injection system finally arrived in ‘85 with the L98 engine and was the base Corvette engine until the arrival of the LT1 in ‘92. Single fire engine tend to run more smoothly below about 2800 rpm and are less likely to backfire through the carburetor. STA-BIL fuel additives are the official fuel treatment of all Briggs & Stratton. Get free shipping, 4% cashback and 10% off select brands with a Gold Club membership, plus free everyday tech support on aftermarket Harley-Davidson Fat Boy Air Intake & Fuel Systems & motorcycle parts. A third cause for motorcycle backfires is the fuel filter. Causes a serious drop in fuel pressure to the fuel rail (supply to the injectors resulting in seriously lean condition, low idle speed, popping rough running, dying at stops, popping on starts, etc. For older Magnetti-Marelli fuel injected bikes, adjusting the fuel table to remove fuel can help reduce popping. what's the other side of the bike look like, what exhaust are on it, it could be running ridiculously rich and backfiring unburnt fuel. A decel fuel amount setting of 100% means no cut. Backfiring problems can also originate in the fuel system. The Wiseco Fuel Management Controller is just the next logical step if you want to get the most out of upgrades, in this case, adjusting the amount of fuel being delivered. Compression Stroke. Happy spring. 2009 Kymco Venox 250 Fuel Injected. There are two types of engine valves; intake and exhaust valves. If there is a problem with either, it's probably related to an input signal to your car's on board engine. Backfiring on deceleration is much more common and often occurs when exhaust and fuel mixture changes are made. Prior to final adjustments the engine may not idle properly. Let's further explain these terms. Because an EFI fuel pump can produce a large amount of flow, a bypass regulator is necessary in order to return the excess fuel back to the fuel tank. All I had to do was advance the fuel on 0% throttle for 500/750/1000/1250/1500 to +5. Great sound. The GM LS engine has a bit of a mythos about it. Ongoing problem: Will often hesitate and sometime backfire through intake manifold - especially if cruising then coast, then hitting gas (kinda like when merging). The bike hasn't run since the fall. It accurately adjusts the fuel-injected engines air/fuel ratio in order for it to run properly. Treatment Recommendations. This issue is caused by: Incorrect timing; Too much fuel; Loose exhaust pipe; Too short of exhaust; Too little fuel; Intermittent spark; I have worked on dozens of motorcycles over the years and backfire issues seem to come around every once in a while. This process is inexpensive and has saved our customers thousands of dollars. I am no mechanic, but , when my sporty did that last summer, (it is fuel injected so not sure this counts) harley told me it was the pipes, but they had been on since i had it, took it to a local guy, he sprayed carb cleaner on the intake gasket and the motor dropped way down, so it fixed it. Backfiring on deceleration is much more common and often occurs when exhaust and fuel mixture changes are made. Inspect your harness closely. He said it was sucking air. A pressure switch on the transmission also has to come into play. If you ride a fuel-injected Harley-davidson motorcycle, one solution is to install a Thundermax self-tuning fuel management system. Your ride has the later Delphi injection system, and it can be set up to run better than any carb by a competent tuner using SERT, PCIII, DTT, ect. Available in 255lph, 450lph, or 525lpl flow rates, these pumps are the perfect solution for EFI conversions and racecars alike. When at idle and it is missing if I remove the rear plug wire no change, it does have a very good spark. Dyna Glide Models - 2003 fxd carb questions - Hey everyone total rookie here with a carbed bike picked it up in December and it's finally warm to drive it. You turn it all the way out from its initial setting to find out that nothing changes or that it only changes when the mixture screw is turned all the way until it bottoms out. Buy a can of fuel-injection cleaner that goes into your gas tank. If the fuel injectors are not operating properly, then other parts of the engine will be affected as well. The bike backfires quite a lot when gearing down. × Dear valued customer, due to extended delays with OEM suppliers and the ongoing COVID-19 crisis, most parts are being placed on backorder status. Using STA-BIL ® Storage fuel stabilizer eliminates the need to drain fuel prior to storage and ensures quick easy starts next season by preventing gum and vanish build-up within your engine's fuel system. Backfire is, generally caused by to much advance, and an after fire is to rich for the timing, or a near flooded condition. They were the FL-series Touring bikes and fuel injection was an option. TorqueTuning is the most effective way to move the power band of your Harley to where you ride. Which starts quicker, a Carb bike or a Fuel Injected bike. In this installment I'll cover the main items that comprise the condition that vexes so many of you: that pesky backfire. Test the throttle for binding and smooth operation. After last year's event got rained out AND cancelled, the LMC Truck Spring Lone Star Nationals saw the return of fans and show vehicles in force. 4L3V Lariat SCREW 10k miles on new motor. For older Magnetti-Marelli fuel injected bikes, adjusting the fuel table to remove fuel can help reduce popping. Fuel injectors are a vital part of a complex, fuel management system. Article courtesy of American Iron Magazine The Harley-Davidson ESPFI system is known as a Speed/Density, Open Loop, Sequential Port Fuel Injection system, that controls both fuel flow, and spark timing. F1000 (Electronic Fuel Injection) F1000 LXR (Electronic Fuel Injection) Harley-Davidson Honda Polaris Yamaha Kawasaki Suzuki Can-Am BMW Ski-Doo Arctic Cat. I have a 2001 Road King, fuel injection. It reduces the amount of fuel injected when the TPS (and/or MAP) are decreasing. Bike is an 09 rocker c with literally 500 miles stock besides a stage 1. Carbureted Harley Won T Start. Harley Davidson 61395-14DST 61348-07 Fuel Injected Tank XL883N fits model: Sportster. I have timing plug and plugs out. Eventually, outside pressures, a rising wave of young Harley-Davidson enthusiasts, and the benefits of new technology in ride comfort, performance, and motorcycle responsiveness, meant that Harley-Davidson. When I pulled the upper plenum/manifold, I found that the Fuel Injection (CFI) Spider was completely melted, as though it had caught on fire inside of the intake. Harley-Davidson Heritage Softail Classic Fuel Injection at BikeBandit. This simple procedure is a great Harley tech tip that applies to all Harley carbs from 1989 to present that use the CV style Harley Davidson carburetor. Take a look at some of the highlights from the show!. The Base Fuel Table should not be totally flat (except in the Fuel Graph); meaning you can't have the same numbers in the idle area. Read More. If your fuel injectors are clogged up and not sending enough fuel into the intake of your engine this can also be a cause for your engine to backfire. The Screamin’ Eagle Pro Super Tuner can be used with these fuel injected Harley-Davidson models: 2002-later VRSC, 2007-later Sportster, 2004-later Dyna, 2001-later Softail, and 2002-later Touring, and is intended for Race Use Only. Harley misses at idle, and loses power while riding at a even throttle. What it is, is incomplete combustion, fuel is left over, and shot into the exhaust pipes. If backfiring is only present at lower rpm, this shows that the injectors are working properly and fuel is igniting in the exhaust due to the oxygen present. If it's equipped with a carb, remove the air cleaner cover and look at the square top on the carb. However, you still need to know and be aware of what exactly are you buying so there would be no surprise expenses once you start driving the motorcycle. My parents bought it for. With just a little bit of hop-up knowledge, some boost, and a computer that is more willing to play along than the standard GM unit, you can take the typical crud-covered truck engine and wind up with a fire-breathing mill that will fit just about anywhere you dare put it. Run the bike and see if the popping has reduced. Without accurate timing information fuel injection will have incorrect sensor (CKP) readings. First few days there was some backfiring as the carbon built up in cylinder's dissipated. Bike is an 09 rocker c with literally 500 miles stock besides a stage 1. The Harley faithful were leery of the electronic technology that replaced the venerable, easy-to-tune carburetor. 。 Better throttle response, no backfiring, and smoother. The spent gases are expelled out. The spark plug lights the fuel/air mixture off. It works on any bike, no matter if it is a plain stock one, has a performance exhaust, and/or performance air cleaner or any other performance upgrade installed. A motorcycle backfire happens because of the presence of uncombusted fuel in the exhaust pipe. The Base Fuel Table should not be totally flat (except in the Fuel Graph); meaning you can't have the same numbers in the idle area. Highlight the zero percent column from 2,000 rpm to redline and enter in values from -40 to -50. When a motorcycle engine has an emission system malfunction, such as an exhaust leak or a moment of running rich or running lean, backfire occurs as a result. Ongoing problem: Will often hesitate and sometime backfire through intake manifold - especially if cruising then coast, then hitting gas (kinda like when merging). The truth is, under moderate to high loads consistent knock counts can cause catastrophic engine failure, usually in the form of crushed rod bearings, cracked ringlands, or a hole in your piston. Since electronic fuel injection (EFI) appeared on Harley-Davidson baggers in 1995, for many of us, the thought of a computer replacing the carburetor’s gas and air mixing duties has been a difficult proposition. When I was young, I still remember the first Harley I had. Article courtesy of American Iron Magazine The Harley-Davidson ESPFI system is known as a Speed/Density, Open Loop, Sequential Port Fuel Injection system, that controls both fuel flow, and spark timing. Relatively newer models do not typically backfire; the ones that do are engineered to do so, like drag racers that you see on Top Fuel. Real backfiring means the engine is not properly timed and the fuel/air mix is getting a spark and ignition at the wrong time (when the intake valve is open). MOTO 7000TW Universal Motorcycle Scan Tool Description: MOTO 7000TW scanner allows the technician to diagnose, adjust, and reset key systems on all major motorcycle brands, including Honda, Harley-Davidson, BMW, Kawasaki, Yamaha. Other causes of backfire are bad or weak fuel pumps, low fuel pressure and clogged fuel filters. “check engine” light from coming on when the stock oxygen sensors are disconnected on 2006 Harley Davidson Motorcycles utilizing fuel injection. Fuel-injected models may work well with up to a half point higher mechanical compression than the values listed above. If you make a vehicle's pipes SHORT enough, with low enough back pressure on a bike (or car) it can suck enough air in to backfire even a fuel injected engine. Connect the digital multimeter to the positive and negative terminals of the fuel pump. An electronic fuel injection system therefore relies on a good electrical power supply to function, so you need to make sure your battery, battery terminals, and charging system is in top condition. All I had to do was advance the fuel on 0% throttle for 500/750/1000/1250/1500 to +5. Took it for a few short rides throughout the winter ran fine no problems. The reason I'm asking is a friends 250R is backfiring while idling. 1% means reduce the pulse width by 99%, to 1% of what it normally would be. Carbureted Harley Won T Start. Fuel injected? Likely a pin hole in the fuel line, inside the tank, from rubbing. ) problem and can not be fixed with air/fuel mixture changes. Usually, when an injector clogs or wears out, causing the air-fuel mixture to lean, the combustion process weakens and fails to properly burn the fuel. Backfiring problems can also originate in the fuel system. MOTO 7000TW Universal Motorcycle Scan Tool Description: MOTO 7000TW scanner allows the technician to diagnose, adjust, and reset key systems on all major motorcycle brands, including Honda, Harley-Davidson, BMW, Kawasaki, Yamaha. Push up on the chrome sleeve on the gas tank, while gently pulling down on the fuel line. FiTech Set-up: Go EFI 600 Fuel System: was FCC now Tanks Inc. Relatively newer models do not typically backfire; the ones that do are engineered to do so, like drag racers that you see on Top Fuel. 48 inch bore and stroke. The reason I'm asking is a friends 250R is backfiring while idling. A clogged fuel filter can reduce both fuel delivery and fuel pressure. A third cause for motorcycle backfires is the fuel filter. Without it, the mixture would cool enough not to explode. Call a GMan Tech now: (855) 864-4626. I personally love 'em. The fuel pressure regulator relies on vacuum pressure generated by the engine to help maintain system pressure and predict what fuel demands are about to be placed on the fuel injection system. Depending on the age of your vehicle, you may have either a mechanical or an electronic fuel pump, and, if you’re attentive, you can catch the symptoms of a failing fuel pump and have it. The Fuel injection unit has an electrical pump which is pressurized so that the fuel can be injected easily and with force to make sure the amount of fuel is accurate. it needs a new battery and a timing adjustment, backfires when giving it some throttle. Harley Davidson FLHTCI Electra Glide Classic 1996-2005. Use the following suggestions to pin down your problem areas. Other causes of backfire are bad or weak fuel pumps, low fuel pressure and clogged fuel filters. Backfire is usually a timing problem. Regular maintenance includes cleaning the carburetor and the fuel injector nozzles. Check out our Products to get your bike ready for the new season of riding. Oxygen Sensor O2 Sensors are used to monitor the amount of oxygen in the engine's exhaust. i hate to see it go but never ride any more and the tax man wants my money. All of these issues can cause the airflow to increase more than the flow of fuel. Backfiring happens all the time, in cars and bikes, you just don't hear it because the muffler/exhaust. same with fuel filter,if it is dirty,fuel pump works harder. Let's further explain these terms. Twin Cam Motors - Newbie help - crank but no start - Purchased a bike thats been sitting for awhile and found out the tank had garbage build up. All fuel systems have a regulator weather internal to the fuel pump or external at the fuel rail. When stabilizing fuel for storage, use 1 (one) ounce per gallon of fuel. Cam design: The earlier the intake valve opens the more likely the dual fire ignition will ignite air/fuel mixture in the rear cylinder. That is to say combustion may be disrupted. & check the sediment bowl (on bottom of carb) for water etc. hows the battery. The injection/induction system employed an Edelbrock EFI intake (Victor Jr. Invented, engineered, and made in the USA, ProCharger provides the most power per pound of boost for automotive, truck, SUV, off-road, sport compact, motorcycle, UTV, and mari. Carbureted Harley Won T Start. Step 7: WARMING UP THE BIKE: Warm the bike up to full operating temperature. All vehicles meeting Bharat Stage 3 (BS 3) norms, but not complying with the latest BS 4 regulations have been banned from being sold, registered or manufactured from 1 April 2017 by the Supreme Court. I have a 2006 Harley Davidson Street Glide with stock 88″ motor. replaced: engine - heads were. 12-spoke wheels evoke a thick spoke look, but carry modern tubeless radial tires; a 130/70-18 front and a fat 190/60-17 rear. The airflow into the motorcycle is increased because of the difference in pipe design and other specifics, and this difference causes backfire in the exhaust. Great sound. A fuel injected engine may backfire if an intake leak is present (causing the engine to run lean), or a fuel injection component such as an air-flow sensor is defective. All vehicles meeting Bharat Stage 3 (BS 3) norms, but not complying with the latest BS 4 regulations have been banned from being sold, registered or manufactured from 1 April 2017 by the Supreme Court. Twin Cam Motors - Newbie help - crank but no start - Purchased a bike thats been sitting for awhile and found out the tank had garbage build up. Checking your fuel injectors may not be that easy of a task as you may have to remove the fuel rail from your engine to check the fuel injectors if your engine. When I pulled the upper plenum/manifold, I found that the Fuel Injection (CFI) Spider was completely melted, as though it had caught on fire inside of the intake. 0 & Blacktop Media! Posted on April 7, 2014 by Justin Bond. Carbureted Harley Won T Start. It accurately adjusts the fuel-injected engines air/fuel ratio in order for it to run properly. After last year's event got rained out AND cancelled, the LMC Truck Spring Lone Star Nationals saw the return of fans and show vehicles in force. Dyna Glide Models - 2003 fxd carb questions - Hey everyone total rookie here with a carbed bike picked it up in December and it's finally warm to drive it. While the market is awash with bolt-on EFI systems, QFI is different: It combines the superior fuel atomization aspects of a carburetor with the precise fuel control of EFI. If you are not getting any DTC's (diagnostic trouble codes) other than the temp. Bike is an 09 rocker c with literally 500 miles stock besides a stage 1. Which starts quicker, a Carb bike or a Fuel Injected bike. Checking your fuel injectors may not be that easy of a task as you may have to remove the fuel rail from your engine to check the fuel injectors if your engine. if it acts up again loosen the gas cap. w/Walbro 255lph in tank pump - just finishing set-up. Took it for a few short rides throughout the winter ran fine no problems. The cylindrical metallic object connected to the fuel rail is the fuel pressure regulator, which is the last component of the engine that is supplied with fuel. When I pulled the upper plenum/manifold, I found that the Fuel Injection (CFI) Spider was completely melted, as though it had caught on fire inside of the intake. The end result will affect the fuel efficiency of your engine. So while trying to research possible causes "I though backfires were always a too rich problem" I discovered that lean mix's can causing backfiring. Ongoing problem: Will often hesitate and sometime backfire through intake manifold - especially if cruising then coast, then hitting gas (kinda like when merging). Air, Fuel and Spark are needed in proper amounts at the proper time. MPG runs about 47 on the road at 75MPH. The is very fuel inefficient, since a larger throttle opening at idle (set by the idle speed screw) is needed allow extra fuel in to keep the engine idling. Use 100% Sea Foam for diesel injector cleaning machines or when priming diesel fuel filters. A Harley-Davidson motorcycle engine may sputter and hesitate when a crank position sensor (CKP) starts to fail. 2004 - 2008 F150 - Hesitate and backfire light to heavy acceleration - 2005 F150 5. A cable kit (P/N 32184-08, $39. I have timing plug and plugs out. - Answered by a verified Motorcycle Mechanic. The “Harley Tax” is the cost that many choose to pay to get their Sportsters or other Harleys running as they should’ve come from the factory, were it not from the government trying to save us from. If it is an intake valve, it will backfire through the intake. style) plus an Edelbrock 1,000-cfm throttle body, fuel rails, and associated plumbing. I've read the unburnt fuel detonates in the header after being ejected from the exhaust.