Fuel Injected Harley Backfire

After market fuel injection modules are available for bikes which have no adjustments. One of The Best Motorcycles in The World. You should only add about 2 points of fuel at a time, test ride it and if you need more then add it - the idea is to fix the problem without dumping huge amounts of fuel and hurting the MPG. A shorter spark line would indicate a weak spark possibly due to a lean fuel condition (dirty injectors or vacuum leaks) or low compression (burned exhaust valve or bad head gasket). A typical naturally aspirated engine configuration employs one or the other, whereas forced induction engines typically use both; a MAF sensor on the charge pipe leading to the throttle body and a MAP sensor on the intake tract pre- turbo. All most new diesel-powered vehicles use a common rail fuel injection system which is a high-pressure injection system feeding fuel directly to the solenoid valves. CW Evaluation: Cobra Fi2000 PowrPro. Electronic Fuel Injection (EFI) controllers for all kinds of UTVs / side x sides. Fuel injector problems can be a serious matter. HD's fuel injection is from the auto-industry standard, DELPHI, the SEST, was was developed by HD, Delphi and a third performance company to simply re-program the ecm, this tuner controls EVERYTHING, air-fuel ratio, igintion timing and curve, rev-limit, injector size changes, auto-enleanment for control of engine decel backifire, and many other. Now, when these get fouled to are faulty, the fuel system will suck fuel but the air coming in is not enough to compensate for the vacuum created in the tank. Backfiring on deceleration is much more common and often occurs when exhaust and fuel mixture changes are made. It is written specifically for MegaSquirt ® or MegaSquirt-II™ EFI users who are new to tuning engine with a programmable controller, and tries to make very few assumptions about what you already know. It is normally located on the left handlebar, above the horn. Proper tuning for your Harley Davidson Fuel Injection Tuning your Harley Davidson's fuel injection with the BoosterPlug couldn't be easier. Replacing the fuel pressure regulator fixed it. i also have the pc usb with s. 91 or 91-percent rich. I'd be cruising on the highway and step on it and it would cough and sputter and then clear up. On the way home her Harley started to misfire and run poorly. By Cycle World. Engine misfires and decrease in power, acceleration, and fuel efficiency. The issue is the fuel line inside of the tank 'rubs' on the inside of the tank from engine vibration. DISCLAIMER: this information is for reference only. The engine backfire on deceleration is also caused by the too lean air/fuel ratio - A lot of people think that the backfire/popping in the exhaust is caused by too rich mixture, but it's actually the other way round. Fuel and air comes from the fuel system and carburetors. 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. Typically it is caused by air getting into the exhaust either past the copper o-ring gaskets in the head or leaking muffler connections from the head pipes to the mufflers. The AutoTune function of the ThunderMax will continually tune any fuel injected Harley engine for maximum performance. The following information is strictly for the Magneti Marelli injection system. A cable kit (P/N 32184-08, $39. DP specializes in electronic fuel injection controllers to increase performance and drivability for Harley and Victory bikes to Polaris RZR and Can Am side x sides to pretty much anything fuel injected. Harley Davidson Softail Misfire refers to when the Harley Softail’s engine runs but fails to ignite the fuel correctly. The valve would close, cutting off fuel and the engine would die. The fuel injection system in the car must supply fuel to the car engine with a constant optimal pressure. Since then, the factory has followed a slow but steady evolution toward equipping more and more models with EFI. While it's been developed by Cobra, it'll work with just about every Yamaha Bolt exhaust system from all the major manufacturers, including Vance & Hines. biz has an efficient motorcycle classifieds. The Cobra Fi2000R PowerPro is the fuel injection module that we run on our Raider, and we are extremely satisfied with its performance. was created by syllinx22 When in park it will sometimes start sputtering and if i give it gas it will backfire through the throttle body. It should be taken as an indication that there is a problem existing (or developing), that will potentially shorten the engine life, or result in unnecessary costs. 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. For the fuel and ignition systems to work properly together, the spark should be in the cylinder via the plug prior to fuel gets there. Fuel injector problems can be a serious matter. Wonderful prices of T Best and other similar items. Q: I can't get the "Bog" out of my mechanical secondary carburetor what's wrong and how can I fix it? The sole purpose of the accelerator pump system is to provide a combustible air/fuel ratio during hard acceleration, especially from idle, for the time it takes the main metering system, via the booster venturi, to respond to the increase in air velocity. You may have to register before you can post: click the register link above to proceed. We the top 10 common EFI mistakes and how to patch them up so you don;t make a costly mistake. Electronic Fuel Injection (EFI) controllers for all kinds of UTVs / side x sides. Find your 2002 01 gsxr! Featuring an extensive array of 2002 01 Gsxr available on sale now. 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. Since then, the factory has followed a slow but steady evolution toward equipping more and more models with EFI. The purpose of this article is to explain how open and closed loop o2 works and how to tune and modify these tables. Another sign of a Crankshaft Position Sensor Failure is the constant stalling and backfiring of the engine. He said it was sucking air. Please refer to the Tuning. All three of these issues have a direct effect on the air-to-fuel ratio. The number of fuel lines on many vehicles has been reduced by “returnless” fuel injection systems. When your H-D engine has the proper air/fuel ratio metered to it, it can perform to its potential, run cooler and be a much more satisfying ride. 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. Ill pull a plug tomorrow and see if its white. My wife’s 2005 FLHTCUSE2 began to develop problems a few weeks ago. Rated 5 out of 5 by RichD from Fits under the stock cover I had the Screamin Eagle High Flow Exhaust System with Street Cannons and the Screamin Eagle High Flow Air Cleaner Kit installed on my 2016 Road King, along with the requisite ECM calibration. This is what we are going to discuss. Get free shipping, 4% cashback and 10% off select brands with a Gold Club membership when you get a J&P Cycles Power Cones (part number 4400180) from J&P Cycles. Purchase the J&P Cycles Power Cones at J&P Cycles, your source for aftermarket motorcycle parts and accessories, with free everyday tech support. Holley 12-804 Adjustable Fuel Pressure Regulator, 1-4 PSI. This will starve the fuel system, causing the bike to run lean and eventually backfire, stall and refuse to start again. You need Fuelpak. 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. We also sell hard to find Carb parts, rebush throttle shafts and sell carburator accessories. Get free shipping, 4% cashback and 10% off select brands with a Gold Club membership when you get a J&P Cycles Power Cones (part number 4400180) from J&P Cycles. Another backfire situation occurs when the engine is running rich, meaning with excess fuel, and there is incomplete combustion, with similar result. Victory engines debuted with five-speed transmissions (later six), single overhead cams, dual connecting rods, hydraulic lifters, and fuel injection; most fuel-injection components are standard GM parts. Alpha-N Idle Fuel Alpha-N Idle Fuel ("Combo" Load Sensing in Engine Parameters) is a fuel injection strategy, based on TPS Position & RPM. Is this normal or due to inferior pipes. You don't need to have a deep understanding of the Harley Davidson EFI system to use MyTune. Backfiring on deceleration is much more common and often occurs when exhaust and fuel mixture changes are made. Another sign of a Crankshaft Position Sensor Failure is the constant stalling and backfiring of the engine. What happens with modern fuel is the boiling point is lower, and you can get vapor lock even when the engine temperature is normal. Nearly every Harley-Davidson motorcycle can benefit with the installation of the Fi2000R. The valve would close, cutting off fuel and the engine would die. By design, there’s really only one thing that can fail on a regulator, and it's pretty rare. Find many great new & used options and get the best deals for Cobra - 692-1600 - Fi2000R Digital Fuel Processor at the best online prices at eBay! Free shipping for many products!. Now, Holley EFI products power these cars and are dominating the performance world. Use Common -Rail Fuel Injection System. I am currently trying to diagnose a problem with why my truck is running poorly. On the way home her Harley started to misfire and run poorly. 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. This produces the well known loud noise and may result in a loss of momentum or power. After market fuel injection modules are available for bikes which have no adjustments. Have you heard others talk about how to Stage 1 kit a Harley-Davidson Sportster? Here’s some basic info on the Stage 1 tuning for your Sportster, the pros and cons, and the costs. Call a GMan Tech now: (855) 864-4626. DISCLAIMER: this information is for reference only. DP specializes in electronic fuel injection controllers to increase performance and drivability for Harley and Victory bikes to Polaris RZR and Can Am side x sides to pretty much anything fuel injected. If the duration of the spark line is longer than about 2 milliseconds, the air/fuel mixture is running abnormally rich. We also sell hard to find Carb parts, rebush throttle shafts and sell carburator accessories. Find motorcycle specifications on moto123 by make and motorcycle type. I'm thinking its running lean. This page is dedicated to the owners of these vehicles equipped with GM's dual point fuel injection (model 220 TBI). MyTune is an easy to use Windows program that takes data logged from your bike and generates a tune tailored specifically for your bike. Welcome to Harley Chat Group. International. You should only add about 2 points of fuel at a time, test ride it and if you need more then add it - the idea is to fix the problem without dumping huge amounts of fuel and hurting the MPG. aFe Power (1) K&N Fuel Injection Performance Kit for 99-04 Jeep Grand Cherokee WJ with 4. Cobra Fi2000R Fuel Injection Tuner has a better throttle response, no backfiring, and smoother cruising are just a few of the areas improved by the Fi2000 for your Cruiser Bikes. Pro-Flo 4 is not just a replacement for your carburetor, it's a complete engineered system that provides the ultimate in performance, drivability and quality. These units typically have adjustments for idle, mid, and high RPM ranges. Replacement fuel pumps, modules, assemblies, and kit components are designed to meet or exceed OEM specifications, and feature upgrades that improve on the. Find fuel valves (petcocks), wheel chocks, air shifters, all electric shifter kits, wheelie bars and more here. HARLEY FAT BOY 2004 FUEL INJECTED - $12000 (PORT MOODY) < image 1 of 2 > *HD FAT BOY 2004 FUEL INJECTED 13375 KM ONE OWNER Engine type: 2 cylinders, 4-stroke, 45. The number of fuel lines on many vehicles has been reduced by "returnless" fuel injection systems. Determine whether you have a carburetor-based or fuel-injected motorcycle. But you also need compression and the correct spark timing. The is an introduction to tuning with a programmable electronic fuel injection ECU. deceleration popping on a fuel injected bike bike backfires and pops during deceleration - Harley Davidson 2005 FLHTCUI Electra Glide question. In other words, it’s when the engine undergoes failure of ignition in. Does your engine back fire and you don’t know why? What causes a car to backfire? Here are five of the most common reasons why your car backfires. IT progressed to backfiring and popping at in town acceleration then not being able to stay running at all. There are a few different issues that can create this situation. Since then, the factory has followed a slow but steady evolution toward equipping more and more models with EFI. With the new 2008 Yamaha Road Star going fuel injection, decided to wait and see how those handle. Below is a list of complaints & problems filed against the 2006 HARLEY DAVIDSON FLHTCUI. It turned out that the vacuum operated fuel valve diaphram had a small hole in it, so when I cranked on the throttle, like heading up a hill, the vacuum would drop, and with that little vacuum leak, not be able to keep the valve open. Carbureted engines usually have a range of fuel and air circuits and other strategies to vary the proportions of fuel and air throughout a wide variety of engine speed and load conditions. It has app 1800 miles and seems to be getting worse. Bikez has a high. backfire my 06 fatboy spits back thru the air cleaner now and then on start up also. Dfco Return MAP = Above this MAP, Deceleration Fuel Cutoff will be exited, and fuel injection returned. 7 : 1, which will ensure that your Classic 500 will give you a small power bump when you install a free flow air filter even as the engine of your motorcycle runs on the perfect fuel mixture. Any time the exhaust is "opened up" the condition of deceleration pops is MUCH more noticeable and problematic. When you combine installing performance parts, a fuel management device, and dyno tuning, you will immensely improve your riding experience. Arctic Cat, Kawasaki, Polaris, Yamaha,etc. Check for a lean fuel mixture. By using this high-tech injection system, there will be hard for any emissions or black smoke to come out at all. 2005 Harley Davidson Ultra Classic, fuel injected problem: Engine will start and run, but, the cylinder #1 backfires at low speed. Buy DynoJet Power Commander PC-V Fuel Injection Tuner Harley Sportster XL1200 07-09 Fuel and timing control Rev Xtend increases Rev limit Reduced size from the PCIII USB Easy-to-install World's largest dyno tested map database. By Cycle World. Basically, smoke from a diesel engine indicates that something is not right. 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. 5 anything below or above that actually make the engine hotter or 'slow', so perhaps I will play around with 13. Harley-Davidson introduced electronic fuel injection (EFI) to its product line in 1995. In the typical gasoline fuel-injection system, an electric fuel pump provides a specified fuel flow at the required system pressure to one or more fuel-injection valves, or fuel injectors. For older Magnetti-Marelli fuel injected bikes, adjusting the fuel table to remove fuel can help reduce popping. Lean Condition: The lean condition is a state where there is more air supply to the engine done through the carburetor as compared to the fuel. com, the official website for Hot Rod Magazine. How to Convert Any in Tank Electric Fuel Pump to an External Inline Pump : Cost: £35. seeks out manufacturers of custom parts and accessories for Harley Sportsters, collaborating with them to build unique new items for your Sportster. – Race Cars and H2O Injection: Professional race cars (which use alcohol as an extremely efficient, powerful, safe, clean-burning engine fuel) adapted the H2O injection system after fighter planes, for both added engine power as well as safe, clean combustion. In any case, as much as I don't like it, there's a often a difference between Harley riders and other motorcyclists. Causes and Cures for Popping on Deceleration There’s a lot of discussion about popping on deceleration. Dyno differences. Fuel economy will also be a problem, along with drivability. TorqueTuning is the most effective way to move the power band of your Harley to where you ride. This is now fixed. The Biggest Problems With Power Stroke 6. The AutoTune function of the ThunderMax will continually tune any fuel injected Harley engine for maximum performance. What Causes Low Pressure in a Fuel Pump? The fuel pump takes the fuel from the tank and delivers it to the carburetor or fuel injection system at the required pressure. Therefore in the event there is a nitrous backfire they are usually less violent. It turned out that the vacuum operated fuel valve diaphram had a small hole in it, so when I cranked on the throttle, like heading up a hill, the vacuum would drop, and with that little vacuum leak, not be able to keep the valve open. My '05 fuel injected Harley Road backfires when decelarating in gear. Diagnosing dead or clogged fuel injectors is difficult because it acts the same than a bad coil, dead spark plug, broken spark plug wires and or electrical problem. It is written specifically for MegaSquirt ® or MegaSquirt-II™ EFI users who are new to tuning engine with a programmable controller, and tries to make very few assumptions about what you already know. 2009 Polaris Prices, Values and Specs Select any 2009 Polaris model An American manufacturer, known for their snowmobiles, Polaris Industries was established in 1954. Step 1 - There are several combinations of misfire conditions, steady or random, at idle or under power, which may or may not be detected by the computer and trigger a check engine or service engine soon light, read trouble codes to help pinpoint the cylinder(s) in question and follow the repair guide below. Causes and Cures for Popping on Deceleration There's a lot of discussion about popping on deceleration. By Cycle World. So you want to get a little more power from your Harley-Davidson Sportster, but you’re not sure where to start. Electronic Fuel Injection (EFI) controllers for all kinds of UTVs / side x sides. They should be cold. Iv had air cooled bikes but this is my 1st Harley. As the engine spools down to a halt, fuel-air mixture is sucked through the intake and into the cylinders, and then pumped out unburned into the muffler, where the hot metal will ignite it. Apart from the higher rotational speed needs, a tuner chip is a must in conjunction with Magnum Harley-Davidson rev limiter to revamp engine horses and achieve maximum vigor with fine engine response. And everybody customizes their Harley. It was developed by a home tuner for home tuners. Replacing the fuel pressure regulator fixed it. Quick Fuel’s QFI is a bolt-on throttle body electronic fuel injection system capable of supporting 500 horsepower. He said it was sucking air. Hesitation or stalling can sometimes occur after tuning or rebuilding your Harley CV carburetor or if your Harley carb has not been maintained. Hardly any engine braking. If you spot a busted fuel line O-ring, make no mistake-replace it as soon as you can. 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. If your motorcycle is fuel injected, using a high grade cleaner will help remove the dirt and debris trapped in your fuel lines. We're the world's largest aftermarket motorcycle parts and accessories store, which means you'll find the best fuel additive for Harley-Davidson right. I've read the unburnt fuel detonates in the header after being ejected from the exhaust port. the bike is fuel injection. The is an introduction to tuning with a programmable electronic fuel injection ECU. 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. 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. Here is a walk through on a common Harley Twin Cam Fuel Pump failure. Look under the tank between the cylinders on the left side of the bike and you’ll see what’s in the top picture to the right. 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. Purchase the J&P Cycles Power Cones at J&P Cycles, your source for aftermarket motorcycle parts and accessories, with free everyday tech support. You've come to the right place. The mighty Harley is slowly loosing its carburetor. This is now fixed. There are two main problems with the motorcycles that Harley-Davidson produces that contribute to this. the engine only has about 50000 km on it and ive been working on getting it running. Tuning Fuel Injected Harley's with the Power Commander PC-III-USB Part one By Dave Bickford aka 'ultraboy' If you read the article "Introduction to Harley-Davidson® Electronic Sequential Port Fuel Injection (ESPFI)" you'll remember that I mentioned we would be discussing. Harley Davidson Softail Misfire refers to when the Harley Softail’s engine runs but fails to ignite the fuel correctly. The fuel injection system in the car must supply fuel to the car engine with a constant optimal pressure. if car won't run for more than a few moments. The shifter control arm and shaft has come off my harley davidson road king twice with only 12,000 miles. Alpha-N Idle Fuel Alpha-N Idle Fuel ("Combo" Load Sensing in Engine Parameters) is a fuel injection strategy, based on TPS Position & RPM. Backfiring on deceleration is much more common and often occurs when exhaust and fuel mixture changes are made. (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. If it fuel injected in the fuel tank -if carb. Stalling And Backfiring. The Delphi efi is a way better system. Harley CV Carburetor Mixture Tuning Notice: All instructions and the EZ-Just are intended for a Harley CV carburetor only. Work so far: Have replaced the 2 fuel lines (inside and outside tank) which has helped, as one of the O rings was bad, and there was a fuel leak. aFe Power (1) K&N Fuel Injection Performance Kit for 99-04 Jeep Grand Cherokee WJ with 4. For older Magnetti Marelli fuel injected bikes, adjusting the fuel table to remove fuel can help reduce popping. The fuel injection system in the car must supply fuel to the car engine with a constant optimal pressure. You need Fuelpak. 5 anything below or above that actually make the engine hotter or 'slow', so perhaps I will play around with 13. International. a backfire is. Cobra FI2000R Fuel Processor Tuners - Harley : no backfiring, and smoother cruising are just a few more of the areas improved by the Fi2000. Ill pull a plug tomorrow and see if its white. There are a few different issues that can create this situation. The biggest factor will be fuel management to get the maximum range out of the 5. , while the engine is running or while shutting down. Backfiring during acceleration occurs when ignition takes place in the intake or exhaust instead of the combustion chamber. - Answered by a verified Motorcycle Mechanic. It works great except it is way too slow returning to idle. The ECU cannot compensate for the. The following procedure will instruct in retrieving and clearing ECM Diagnostic Trouble Codes and TSM/TSSM codes through the Harley gauge cluster as well as a list of codes. A simple way to test the battery terminal is to start the car when cold then immediately feel the battery terminals. July 3, 2012. Things were looking up: I replaced the spark plug, cleaned out the exhaust, adjusted the idle / fuel screws, and even replaced the brakes (I can stop now!). Re-mapping should help fix it. Keep your entire fuel injector system flowing clean and smooth with our wide range of Harley-Davidson fuel injection components. If you aren't sure, you can tell by looking for a choke control. 0L/364 Intake Manifolds, Fuel Injected and get Free Shipping on Orders Over $99 at Summit Racing!. IT progressed to backfiring and popping at in town acceleration then not being able to stay running at all. Occasionally a diaphragm does fail. The History of Indian Motorcycles with MASSIVE Photos. Harley-Davidson introduced electronic fuel injection (EFI) to its product line in 1995. Check for a lean fuel mixture. The issue is the fuel line inside of the tank 'rubs' on the inside of the tank from engine vibration. 95) is sold separately. It works great except it is way too slow returning to idle. Basically, smoke from a diesel engine indicates that something is not right. If the motorcycle is fuel-injected, a high-grade cleaner can remove dirt and debris trapped in the fuel line. In theory Harley’s fuel injection system is still an open-loop system by design. These problems includes information received by NHTSA from consumers either directly or as recorded by the Vehicle Safety Hotline. So I figure the correct adjustment of the fuel mixture screw should help with the problem. Mixture tuning on your Harley Davidson CV carburetor is a simple procedure that can easily be performed with basic tools. All most new diesel-powered vehicles use a common rail fuel injection system which is a high-pressure injection system feeding fuel directly to the solenoid valves. Buy GMan Motorcycle EFI Controllers for Yamaha VStar 1300. The backfiring of the motorcycle is a signal that something isn't quite right. The is an introduction to tuning with a programmable electronic fuel injection ECU. Fuel injector problems can be a serious matter. Although fuel injectors are individual, they are designed to work as part of a team with the other injectors. , while the engine is running or while shutting down. Click here to sell a used 2007 Harley-Davidson FXDB Dyna Street Bob or advertise any other MC for sale. A cable kit (P/N 32184-08, $39. Nearly every Harley-Davidson motorcycle can benefit with the installation of the Fi2000R. Rev Limit RPM = Above this engine speed, the fuel and spark will be turned off. 2005 Harley-Davidson Sportster XL 883R from United States of America - Comments last year for the R model in 07 and first year for the fuel injection. Finally, a higher grade of fuel is in order to clear fuel lines and keep the fuel tank clean. You may have to register before you can post: click the register link above to proceed. Use the following suggestions to pin down your problem areas so that you can stop your motorcycle from backfiring. Backfire is rare in modern cars with fuel-injection and computer-controlled fuel mixtures. Russell Performance Adapter Fittings, feature a wide variety of specialty adapter fittings, for a large range of applications. When your H-D engine has the proper air/fuel ratio metered to it, it can perform to its potential, run cooler and be a much more satisfying ride. Carbureted engines usually have a range of fuel and air circuits and other strategies to vary the proportions of fuel and air throughout a wide variety of engine speed and load conditions. Harley-Davidson Motorcycles. The Harley faithful were leery of the electronic technology that replaced the venerable, easy-to-tune carburetor. This is not to say that detonation cannot become an issue on other automobiles as well, as it definitely can. The Deceleration Pop Problem Decel Pop is many times a nasty issue to deal with. 2007 Harley-Davidson XL883C - White Gold Pearl with Fuel Injection (new for 2007, so no manual choke). Many fuel injected bikes have an idle adjustment which should be set between 1-3% CO. You don’t need to have a deep understanding of the Harley Davidson EFI system to use MyTune. hi all, thanks for the replies. After a short ride, we stopped for her to get gas. Edelbrock has been delivering the best combination of dyno proven electronic fuel injection performance for over 40 years. Harley Chat Group. The shifter control arm and shaft has come off my harley davidson road king twice with only 12,000 miles. 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. On the way home her Harley started to misfire and run poorly. You should be aware that if your map was made or tested on a dyno to work for your bike then you will actually be detuning your bike doing this. Find many great new & used options and get the best deals for Harley EFI Ignition Coil with Mount will fit 2001-2008 31743-01 at the best online prices at eBay! Free shipping for many products!. It isn't easy being old. Harley-Davidson's new line of 2007/2008 engines is a major shift from previous years. Hardly any engine braking. In theory Harley’s fuel injection system is still an open-loop system by design. Some form of thermostatic control has been used on vehicles equipped with a throttle-body fuel injection to control intake air temperature for improved driveability. WELCOME TO THE TFI CONTROLLERS WEBSITE: For over a decade the Techlusion Fuel Injection (TFI) controller has been helping riders experience better drivability and increased throttle response without added complexity. The Twin Cam engine size has grown from 88CID to 96CID with a longer stroke. Electronic Sequential Port Fuel Injection (ESPFI) was first seen on the 1995 FLTCU Tour Glide models, and Harley will offer ESPFI on all touring models this year. If the idle speed is wrong, remove the air cleaner cover and. You can list all 2007 Harley-Davidson FXDB Dyna Street Bob available and also sign up for e-mail notification when such bikes are advertised in the future. In such a scenario, the engine is prone to stalling as you drive. Carbureted engines usually have a range of fuel and air circuits and other strategies to vary the proportions of fuel and air throughout a wide variety of engine speed and load conditions. Therefore in the event there is a nitrous backfire they are usually less violent. For older Magnetti-Marelli fuel injected bikes, adjusting the fuel table to remove fuel can help reduce popping. The airflow into the motorcycle is increased because of the difference in pipe design and other specifics. Bikez has a high. , up to 2001. Harley-Davidson Motorcycles. Cobra FI2000R Fuel Processor Tuners - Harley : no backfiring, and smoother cruising are just a few more of the areas improved by the Fi2000. What Causes Low Pressure in a Fuel Pump? The fuel pump takes the fuel from the tank and delivers it to the carburetor or fuel injection system at the required pressure. When your H-D engine has the proper air/fuel ratio metered to it, it can perform to its potential, run cooler and be a much more satisfying ride. A Harley with a stock C-V carb. My '05 fuel injected Harley Road backfires when decelarating in gear. TFI is an acronym standing for Techlusion Fuel Injection. Here are some additional reasons that specific types of vehicles may not be getting enough fuel. Better throttle response, no backfiring, and smoother cruising are just a few of the areas improved by the Fi2000. This is where we will post notices about the forums and system status updates. CW Evaluation: Cobra Fi2000 PowrPro. Backfire Alley's got 'em all. These units typically have adjustments for idle, mid, and high RPM ranges. You can reduce/ remove the popping by adding fuel percentage to the tune. The following information is strictly for the Magneti Marelli injection system. Learn how to diagnose and solve an engine backfiring problem… in case it is a problem. It goes the same for engine backfiring. Despite the 1 million that have been made, even the brass back in. Can you raise the boiling point?. On the one hand, fuel consumption will go down, which seems like a good thing. The guys at Yamaha did a great job with the 2010 YZ450F and the addition of fuel injection is the icing on the cake! Now we have the great handling chassis the awesome 450 power and the fuel injection to bring it all together, no more wrestling with the old finicky FCR carburetor. Cobra's Fi2000 and Fi2000R digital fuel processors supply the solution. July 3, 2012. The Cobra fuel management system taps into the fuel injector circuits to make correction to fuel mixture and is very easy to adjust for stage 1, 2 or 3. Either the engine is not getting enough fuel, which is also called running lean, or the engine is getting too much fuel, which is also called running rich. This will starve the fuel system, causing the bike to run lean and eventually backfire, stall and refuse to start again. Hi , i asked a qeustion about my Stang a little while ago, it was continuisly backfiring and i couldn't get it right, everything seemed to be right, timing, advanced timing. Providing troubleshooting procedures and a systematic approach to help you diagnose & accurately repair your 1986-2008 Harley Davidson Sportster XL/XLH 883-1200 Motorcycle. This is a most important indicator of what is happening. Call a GMan Tech now: (855) 864-4626. The idle is pretty rough too. Because fuel injection doesn't correspond to engine load, a broken MAP sensor can lead to an increase in harmful emissions. A Harley with a stock C-V carb. Stalling And Backfiring. After a short ride, we stopped for her to get gas. A surge is usually caused by a fuel system management or drivetrain operation failure. Ferrari 250275, Sands Cycle 170-0289 Intake Efi Ft143 02-05. Engine Hesitates, Stumbles, Lacks Normal Power The computer uses this information to determine how much fuel is needed to maintain the correct air/fuel mixture, and when extra fuel is needed if the throttle suddenly opens wide. biz has an efficient motorcycle classifieds. Tuning Fuel Injected Harley's with the Power Commander PC-III-USB Part one By Dave Bickford aka 'ultraboy' If you read the article "Introduction to Harley-Davidson® Electronic Sequential Port Fuel Injection (ESPFI)" you'll remember that I mentioned we would be discussing. The CKP sends data to the motorcycle computer data center about the position and speed of the crankshaft, the ignition and fuel injection. Always check to insure that you have the proper fuel pressure. You can list all 2007 Harley-Davidson FXDB Dyna Street Bob available and also sign up for e-mail notification when such bikes are advertised in the future. In other words, it’s when the engine undergoes failure of ignition in. The Fuel Injection System Layout & Troubleshooting (Gadget) Fuel Filter Replacement for '01-04 Classic/Nomad (Quinton Grubbs) The Keihin CVK-40 Carburetor (care and feeding of) ( Redondo Ron) Coolant Change, a Step by Step How To (Gadget) Coolant Replacement Options. But most forget that they will have to re-tune their motorcycles to avoid exhaust popping, spitting and backfiring. It is written specifically for MegaSquirt ® or MegaSquirt-II™ EFI users who are new to tuning engine with a programmable controller, and tries to make very few assumptions about what you already know. Glossary of Automotive Acronyms Backfire Suppressor (Ford) Control of Ignition Timing and Fuel Delivery Through an Electronic Fuel Injection System. Oddly, some carbs operate the same as these fuel injection bikes. Consult your motorcycle's owner's manual for usage of a fuel injector cleaner for your model. Failed Emissions Inspection. Click here to sell a used 2007 Harley-Davidson FXDB Dyna Street Bob or advertise any other MC for sale. 95) is sold separately. We usually refer to an exhaust backfire as a "backfire", and backfiring through the carb as "spitting" or "coughing". It turned out that the vacuum operated fuel valve diaphram had a small hole in it, so when I cranked on the throttle, like heading up a hill, the vacuum would drop, and with that little vacuum leak, not be able to keep the valve open. Fuel-injection tuning made brainless. On the way home her Harley started to misfire and run poorly. WELCOME TO THE TFI CONTROLLERS WEBSITE: For over a decade the Techlusion Fuel Injection (TFI) controller has been helping riders experience better drivability and increased throttle response without added complexity.