Motorcycle sputtering fuel injected Drive it everyday on my short commute in Denver. The heat soaks throughout the cowling and vaporizes the fuel in fuel lines running from electric fuel pump on the firewall to the carburetor. Supersport Sputtering at higher RPM's - fuel delivery? Once over 5500 RPM it starts to hesitate and by about 6000 RPM there's sputtering and popping in the exhaust and it feels like a fuel cut rev limiter on a fuel injected car. Lots of power, no hesitation all the way through the RPMs. The 2007 vstar 950 should be fuel injected. A misfiring motorcycle faces issues such as uneven air/fuel supply and inefficient ignition of the fuel. The system can be fine tuned to get maximum performance under the current riding conditions. Within 30 seconds the bike will die and WILL NOT Engine Sputtering Under 2000 RPMnormal? 3rd Gen Honda Magna (1994-2003) V4MuscleBike. Subsequent attempts to start just flooded the cylinders and coated both plugs with gas. Touring Models . First off I would pull the battery terminal, and let it sit for a bit, about 20-30 min should do it. ) Now, I work with folks who, by and large, ride fuel-injected motorcycles. I've done both, and much prefer the aux tank. is it the jetting? if it is how do i clean the jets? i am new to engine worrk If the engine is pulling hard up a hill and its not completely revved out then it won't sputter. Certified Professional Motorcycle Mechanic since 1983, Published Motorcycle Technical Writer, When you’re cruising on your Harley Davidson, the last thing you want is your ride to be marred by a sputter or stall. Bike runs hot/feels slow and flat on straights. Fuel-related issues can also cause sputtering. you will want to run it in the on position when you fill the tank and when it gets low after riding a long distance it will start sputtering and try to run out of fuel. Suzuki 250F 2014. Updated: July 1, 2020. The first fuel-injection system on a streetbike debuted in 1980, but for the most part, carbs were how motorcycles mixed air and fuel right up to the turn of the century. #4. Anyone that can help would be great. Proper tuning is essential for maximizing fuel Hi there, first time on TT. The carbureted Monster was just as happy after a minute of warmup as the fuel injected ST2. 7:1 and 15. As the name suggests, fuel injectors ensure that fuel is carefully injected into the engine for combustion. Plus, much of the new hardware is the same or similar to that found on KTM’s injected four-stroke engines, I even put some gas in it halfway through my ride. The adjuster is next to the frame and under the fuel tank, so this is best done with the tank removed and either hung with a long fuel line to the pump, or replaced with a small aux tank. More Mc Garage. Those guys are great with the Hey there! If you’re like me, you probably love your Android phone—it’s your go-to for everything, from social media scrolling to working on-the-go. Knowing the signs can save you time and money, ensuring your ride stays smooth and efficient. We rode about 30 or so miles. Most of the time people use that to piggyback (or bypass) the OEM ECM on an engine that was fuel injected in the first place, but if you can fabricate a way to get fuel injectors where you need 'em, there's no reason you couldn't use it on a These needs led to the development of fuel injection systems, which are used by the majority of cars and motorcycles today. When you close the throttle, the mixture tends to become lean. Ran bike for 20 minutes around neighborhood not problem. Seems to be happening in turns. See if that fixes it. For steady cruising speed, the ideal air-fuel mixture range is typically between (14. Clogged fuel injectors: The bike shouldn't need the valves adjusted at under 5k miles. Gummed up carburetor bikes are bad, gummed up FI systems are worse Cold start problems occur more on carbureted motorcycles than modern fuel-injected models. The most common reasons are carburetor issues such as a vacuum leak, fuel leak, or tuning issues. When i got the bike, it had a fresh top-end with a high compression piston, and stage two hotcams and a aftermarket Welcome everyone! This video is of a 2005 Kawasaki Vulcan 1500 Fuel Injected motorcycle that was running rough, cutting out, and missing upon hard accelerati This is why a fuel-injected bike performs much better in cold temperatures than a carbureted one, and it’s why you don’t have to rejet if you ride at higher elevations. I Customer: I have an 05 Harley Fat Boy (fuel injected) Today on the way home from the gym it started sputtering bad. Since the bike is fuel injected it's not as affected by a dirty filter like a carb'd HELP - she doesnt stay running. April 28, 2009 fuel-pressure in fuel rail; fuel-pump flow-rate; fuel-injector static flow-rate at 3-bar pressure; TPS-sensor output voltage; Compare numbers you measured to standards in service manual. . The symptoms of clogged fuel injectors include: I have a 2003 Road 88 cubic inch fuel injected. Mechanic's Assistant: Are you fixing your bike yourself This is more plausible if you have a motorcycle with a carbureted engine than a fuel-injected one. On a wide open track I have no issues, the bike runs great. 2023. It can also backfire while riding. “I have a 2012 [Harley-Davidson] Road King police model with 14k on the clock. This was the time when electronic fuel injection (EFI) became available. Faulty ECU (on fuel-injected motorcycles). Try this. This article explores how the system enhances throttle response, performance, and fuel efficiency while mitigating cold start issues. Not a single problem! Even drove it to work last night, 9PM. Debris in gas or carb. All they really did to add fuel injection was install a throttle body, with a manifold that holds the injectors, so the fuel still has to pass by the valves. While relatively uncommon, Harley Davidson fuel injection problems can be a real buzzkill, and if you own a Harley, it’s helpful to know about the intricacies of your bike’s fuel injection system. Would absolutely buy a 2-stroke fuel injected motorcycle, especially from Aprilia. Fueling Issues (Carbureted or Fuel Injected) Both carbureted and fuel-injected bikes can have fueling issues that lead to bogging. When I first start it and take off it is a beast. I should note every time I take the pump assembly out and allow it to dry for a day or two while troubleshooting and plug it back in, it runs amazing for Expertises: motorcycle, riding gear, harley-davidson Wrong Air-to-Fuel Ratio. I’m sure my next bike will be fuel-injected, but I think an older carbed bike is great for a starter and if money is Capable of keeping the fuel fresh for up to 24 months in the motorcycle fuel tank, the STA-BIL Storage Stabilizer is effective in all gasoline engines, including the engines that employ non-ethanol and ethanol blends. Last week I purchased a very clean and lightly used 2005 CRF450X with the CCC mods installed by a Honda dealer (cam, header pipe, rejet, opened air box, baffle removed, pink wire). Various sensors send data to ECU, which controls the fuel supply to maintain a stoichiometric ratio for better 2003 Road Police Fuel Injection - have had bike "sputter" 3 or 4 times now when pulling out from stop sign - twice on a I have a 2003 Harley Road that is fuel injected and it sat for a couple years and now won't start. started after i fueled up. that is when the reserve or (RES) comes in. Vacuum Leaks: This means your engine might sputter or vary in RPMs without any warning. Replaced fuel line, fuel pump, fuel regulator, fuel filter, regulator and all the lines inside the tank. You Fuel injected vehicles that sit often have stuck or gummed-up injectors and stuck, inoperative fuel pumps. While both engines can sputter through some water, in fuel injection it can damage the injectors. cleaner is 354ml and my motorcycle fuel tank is 12L. Over time, fuel injectors can become dirty or clogged due to: Accumulation of fuel additives; Using low-quality gasoline; Debris from the fuel tank; If the fuel injectors are not delivering an even and constant stream of fuel, your motorcycle’s EFI system can’t maintain a consistent idle. and this video should be helpful. So a couple of weeks ago I bought an RM 85 and put a fresh new top end kit in it (weisco). Just started having trouble with bike sputtering and wants to die - Answered by a verified Motorcycle Mechanic Answered by a verified Motorcycle Mechanic. In a carbureted engine, though, the process isn’t nearly as efficient, and some fuel is bound to get into the exhaust. Ran great for ten miles then started sputtering and backfiring. At the beginning of this riding season, he was experiencing an issue with sputtering (similar to when the engine was running too cold), so he cleaned the carburetor and Similarly, clogged fuel injectors in a fuel-injected motorcycle impede the precise delivery of fuel to the engine. when the gas tank is almost half empty approximately 50 miles the bike starts to sputter and spit and sometimes shuts off. Before the new cylinder with added boost ports it ran great, no problems at all. A modern fuel injected bike should not have this issue, or the issue the first person to reply has. During these tune-ups, experts can identify and address potential issues before they lead to backfiring. I then looked into the fuel pressure and decided Triumph wants way to much for simple tools and parts. Uggggggggh, what do I do next? It aids in minimizing stress on the motor when the motorcycle is at rest. The air filter is less of an issue. sensor. i bought this miata that had been sitting for 7 years and got it to start, but it wont stay running without throttle. In modern bikes, the air-fuel ratio is electronically controlled. Fuel line had a pin hole by the check valve. Now I'm runnig the KTM --which has been set I have the following issue on a brand new 2019 KTM TPI fuel injected XCW 300. This is due to their precise fuel delivery and the ability to adjust for different riding conditions. is it possible i got a bad tank of gas? Mechanic's Assistant: Have you noticed an increase in fuel consumption? And how does the motorcycle start—same as usual? Customer: starts fine, just bought the bike a month ago, so unsure of consumption Mechanic's Assistant: What is the make/model of your When you are at full throttle, the main jet is the primary fuel metering device, but the pilot is still delivering fuel as well, adding to the total amount of fuel that your engine is receiving. The hard part is getting a controller that works and getting it tuned to run properly, which will almost certainly take many hours of But Harley wasn’t done with innovating when it introduced the first Road King. Sputtering Engine. If you have a fuel-injected bike, this section won’t pertain to you, but for anyone riding a pre-2000s bike, good chances are you have a stale fuel in a fuel injected motor. 3. Jump to Latest Sent from my SAMSUNG-SGH-I897 using Motorcycle. the bottle says "treats up to 20 Gallons". And stabilizer does not stop fuel evaporation. Actually, it’s all about the air to fuel ratio (AFR) The engine might sputter and finally stall. Something might have come unplugged with the drop. Carburetor Issues. In a motorcycle, they just need some pressure to work. as soon as i got it up to good Low fuel pressure: This could be due to a defective fuel pump or fuel pressure regulator. so you can get water forming which can cause motor to sputter. Put around 7k miles on it in ~3 years of ownership. I know nothing about a KX250F but there are certain commonalities to fuel injected engines and I have seen Have an 04 wide glide fuel injected. It's a weird problem that I haven't been able to figure out. Cylinder valve pressure leakage. The fuel injected ST2 will still die when cold if I turn the cold start lever off and close the throttle all the way at the wrong time. 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. Joined Jul 13, 2009 Messages 134 Location Georgia. Most newer carburetors have a valve that increases the fuel when you Carbureted motorcycles generally do not use fuel pumps, but newer fuel injected motorcycles do. After I rode it for a bit I suddenly started getting coughing and sputtering while using a steady throttle (cruising). 2010 FLTRX Wimmer Better Sucker,FM 107 kit with Wood's 777 cams,V&H propipe, nitrous. At higher rpms the pump is providing sufficient fuel but at lower rpm the escape of fuel is too great. 2,474 Satisfied Customers. Turn the key on, wait a few seconds, turn it off then back on about 10 times, then try to start the bike. that probably accounts for your low speed sputter as well. or similar. For a motorcycle to have a steady power output it needs to have an ideal full combustion cycle (intake, compression, power, & exhaust stroke) with a proper air/fuel ratio supplied to the combustion chamber and a good spark . When you’ve got a fuel-injected Harley that just won’t roar to life, it’s easy to feel frustrated. I'd also suggest to Start by examining the fuel system, as issues in this area are a common cause of sputtering. The ninja fired right up with a fresh battery. In this guide, we’ll walk through the process, list necessary tools like fuel pressure testers and adapters, and share some tips and Obviously, the fuel flow is being cut off somewhere in the system. Alternatively, your engine Customer: I have a "2001" fatboy, (fuel injected). During his final ride, the plugs were fouling with too much gas. Replace fuel pump, and crank sensor. I am having a problem with the engine cutting out but not all of the time. The gas had gone bad in my carbed bike in the same time frame and had to be cleaned out. 9. Motorcycle engine sputtering is typically caused by an often serious issue within the fuel system. Less ox les fuel. 1). Lots of great info but I just couldn't find anything to fit my situation. When the mixture is too lean, it doesn't burn properly, so fuel goes into the exhaust and explodes there. 0% Gas line crimp Float level too high, gas is trapped in vent tubes (install T-vents) Bike starts but won’t take throttle without sputtering. Reply reply (gas or electric), a type of motorcycle with a step-through frame. If the spark plugs are worn or dirty, they may not be able to ignite the fuel properly, which can cause sputtering. it's the part name. Let it sit for 5-10 minutes fires up no problem. If it IS fuel injected, a shop visit might be needed if cleaner in the gas doesn't help. The carburetor or fuel injector are delivering smaller amounts of fuel which is what causes the sputtering. Motorcycle Fuel Injection Kits and Electronic Fuel Injection Systems - EFI . By appreciating the vital role of the fuel pump, riders can better care for their motorcycles and enjoy reliable We follow the sun from Florida to California while testing Kawasaki's fuel-injected Vulcan 1500 Classic. What To Do When Your Fuel Injected Harley Wont Start. Fuel injection systems generally offer better fuel efficiency than carburetors. Thanks. Back cylinder plug was backing out, so I cleaned and tightened it. This technology has replaced the older carburetor systems Took the bike for a quick test ride, and it seemed ok. That is unusual on a fuel injected bike. youtube. okay i had problems with my bike not idling with the choke off and so i put a new pilot jet in from a 50 to a 52 and it idles with the choke off now i didn't change the main jet but I'm wondering if i should because when i ride it in low rpms it sputters until i This is why you will experience a sputter at lower rpms. 0% Wrong codes downloaded Votes: 0 0. Fuel Injection. When fuel injectors clog over time, their reduced performance can have a ripple effect on your engine. When your tank runs out of gas, your motorcycle will first start showing signs by starting to sputter. I did ride it before adding new gas later and changing the fuel filter, plugs (maybe 100-150kms later). Check the following components: Fuel filter: Ensure it is clean and free from debris. It is Spitting, sputtering, surging and loosing more power the more I drive it I got the motorcycle 2 years ago - it was sitting for several year, so I cleaned the tank, cleaned the fuel lines and injectors, replaced the plugs and air filter - the bike ran perfect for the last two years. On low RPM, the engine is sputtering (sorry if I can't find a better word, I am not a native speaker) It feels like a cold engine but all the time, even after Gave 12v to the fuel pump and it runs and has a steady stream, took injectors out and ran cleaner through them while giving them 12v and they spray good, when kicking the bike over there is not enough fuel coming out of the injectors. View attachment 793630 View attachment 793631 The bike is a 2009 lifan gy5. As fuel evaporates, it thickens and becomes gummy. you need to tune your ECM to provide the correct air/fuel mixture. so my question is,would that be ok to put the entire bottle to my 12L tank ? coz bottle never mentions that it doesn't hurt even if i put it to any lesser amount of gasoline. I don't know anything about jetting since I've been spoiled by my injected BMW for way to long. Could see fuel flowing in the tank. A well sorted carbed bike will beat any fuel injected bikes throttle response, because fuel injection is a reactive system and carburetors are mechanical therefore proactive. It has gotten progressivlely worse for the last month, to where it now does it all the time. Not sure what I should do. I have the following issue on a brand new 2019 KTM TPI fuel injected XCW 300. I let an injected ninja 650 sit for a year. Most other times, it won’t, and your motorcycle will sputter from the absence of fuel. The basics of is are your need to find a set of throttle bodies about the same size as your carbs, and a fuel pump that can meet the fueling requirements. A carburetor is a mechanism that correctly mixes fuel and There are several reasons why a motorcycle sputters. A fuel filter, probably within the gas tank is probably plugged up and must be cleaned. A quick look at the pros and cons of carbs and EFI. Somewhere, some place, you have number that doesn’t match up to what manual says it should be. On low RPM, the engine is sputtering (sorry if I can't find a better word, I am not a native speaker) It feels like a cold engine but all the time, even after 3 hours of riding. Signs It's actually the same part, just hooked up to a different place on the other end. i have a 2003 yzf250 and it is sputtering. By far the main reason for fuel injection on modern vehicles are emission regulations. Fuel injected Harley won’t start? Here are the most important things to look at to get your motorcycle back up and running. Being a mechanical engineer, he takes a keen interest in technical details and a hands-on approach to Kawasaki Motorcycle Forums. fuel injected bike running real rough. I know it has something to do with the carb/jetting but not the specifics. I put a Leo Vince pipe on it and derestricted the ECU. In fact, the more gas you try to give the motorcycle, the more air will be sucked into the unwanted holes which will ultimately make you lose power. VicL. Regular They introduce their first fuel-injected motorcycle in 1995, and this move isn’t just for kicks. Finally, disconnecting the fuel hose from the boat does nothing. There’s a fuel pump (from the EXC-Fs), oil pump, injectors and sensors but this technology was tested in the Roof of Africa last year and finished with no mechanical dramas. Stopped for gas, rode about a mile, made a right and it started sputtering just like before the TPS replacement. Something is wrong, and something is confusing the computer. From the June 2000 issue of Motorcycle Cruiser magazine. Learn how the SV650 delivers 50-60 mpg, automatic adjustments for varying conditions, and There are more parts and it’s more complex which means more stuff to break. We use cookies to give you the best possible experience on our website. The fuel pump will not pump fuel unless the PCM/ECM/ICM (depending on make and model) had enough power to boot. Meaning for every 1 gram of fuel, around 14. Specs; 2009; Gas / Oil Injected Fuel Injector. You open the mixture valve and vaporized fuel “steam” rushes into the carburetor and flushes all of the fuel in For instance, that dead engine can be the result of mishaps with one small component of the vehicle: fuel injectors. Bike is sputteringHELP . im new to cars and reddit so sorry if this isnt posted correctly. at first it seemed like at first it was only backfiring and dying at low speed/rpm. I’d probably bet a lot of bikes are like this, and not direct injected. Pilot jet too rich. so she started sputtering and i filled her up. I have a 2012 Road the often 2002 DYNA LOW RIDER FUEL INJECTED SPUTTERS BADLY AT LOWER SPEEDS AND ALSO BACKFIRES OCCASIONALLY ON DECELERATION - Answered by a verified Motorcycle Mechanic Answered by a verified Motorcycle Mechanic where it ignites. I also noticed it when I decelerated and put the gas back on. Running out of fuel will not cause damage to the fuel system or the carburetor. This type of exhaust system is typically more complex to install than the mufflers-only system, but the reward is a greater power gain, and often a more aesthetically pleasant exhaust system. Cons: Water in the fuel is a killer. when i give it not even 1/2 gas and right know i slow back down, it keeps on sputtering. For that reason alone I need a fuel injected bike. since my gas gauge doesnt work i fill up as soon as she starts to sputter a bit. (It got hard to ignore fuel injection around that time, anywho. Reconnected tank fuel line. From rough idling to a sputtering engine, the symptoms of a clogged injector are The engine on my Honda, which is still in production today was originally designed as a carbureted bike. So anything that is going on is happening on the motor side not related to tank, ball, fuel separator, etc I also ran two bottles of 50/50 mix of techron fuel injector cleaner/gas and 50/50 mix of seafood/gas through it tonight. After idling for about 5 minutes it finally regained power and ran normally again. Then using a cheap auto parts store Fuel Injection test kit along with some new fuel line and some jumper wires I was able to set my fuel tank on my work bench and start my bike. Fuel injected. Is this bike fuel injected ? If not, are you using the choke to start it ? Either way, a healthy dose of carb cleaner wouldn't hurt. Motorcycles; All Recent; Join air filter on my 06 honda shadow spirit 750cc and now it spits and sputters won't go past 35 with out spitting and Despite brand new battery and strong starter action, the bike would not quite fire on first start attempt. If your emulsion tube and high speed needle are worn the high speed jet is going to release droplets of fuel that WILL NOT BE ATOMIZED and thus the sputtering. Mc Garage. 4 hours. Checked the oil and noticed that in 1000 miles of riding I have lost 1. Piston ring wear. Vintage motorcycle restorer. Got off work at 6AM and started riding home and about halfway through my trip bike started sputtering and died. So again, once the ECU sees whatever it needs to see from the motor (voltage and oil pressure) , it will most likely trigger the pump. What is a fuel-injected motorcycle? While fuel injection had been present as early as the 1930s, it wasn't until the 1980s when the technology made its way into bikes. So heat from the heater can be blown to the carbs. You can’t feel it when I cant get my 2007 Suzuki Boulevard to run good. I rode it for about a mile and started sputtering/died again. If the fuel filter is clogged or the fuel pump is not working properly, the engine may not be getting enough fuel, which can cause sputtering. If not you will have to pull the carbs and clean them. What year, make, & model of motorcycle are you coming from? And, what do you want the new bike to do better? 2006 DR650 and a plated 2004 XR400 Better suspension without completely replacing existing components. It seems to be when I come down from high speed and downshifting. A motorcycle backfire happens because of the presence of uncombusted fuel in the exhaust pipe. These problems could be due to a dirty carburetor, clogged jets, or a malfunctioning fuel injection system. There might be a problem with a coolant temp. I pulled off to side and got it started in about a minute. Bike will spit and sputter like it's running out of fuel and shut of. Other culprits could include corroded or cracked spark plugs or spark plug wires, a For fuel-injected motorcycles, clogged fuel injectors can cause sputtering on acceleration. By Ari Henning. Debris in main jet. i then fill the tank and the bike runs excellent. Fuel injectors: Clean or The air-fuel mixture is crucial for the proper operation of the engine. I went on Ebay and picked up a used fuel line for about 12 bucks. You adjust it with a set of matched vacuum gauges connected to the vacuum ports with a pair of 5mm thread adapters. Fuel-Injected Motorcycle Bogging Down Fixed. Start by examining the fuel system, as issues in this area are a common cause of sputtering. Yes it's been at the dealership for what can be described as a "sputtering Bikes with a fuel petcock typically don't have fuel gauge or a low fuel warning. Mechanic's Assistant: Have you checked the battery, particularly the terminal connections? Are they corroded? It could also be a problem with the reg/rec but I would start with the fuel system first as that is usually the problem with those old bikes. So then I let it run like that for a few minutes, and eventually it sputtered out and died, and now it won't even do that. The dealer download is still lean. Motorcycles and cars used carburetors for more than a century, and a lot of third world country market vehicles still use carbs today. If nothing else, I would add a TFI and adjust the fuel yourself. Seemed like I needed to pull both plugs and dry them out. When you level of you adjust the mixture. Replaced the plugs, gapped at 40, changed the fuel, and still Hi, I have a 2003 ktm sx 250 that sputters when I give it gas at low rpm. put the selector in that position and get to a gas station quick. Search Fixya. I have always liked quirkier cars/motorcycles so was wondering if anyone has any suggestions for an Air Cooled, Inline 4 motorcycle (like the Cb750) but with fuel injection? I’m no mechanic, not afraid to get hands dirty but never worked on a carb before so don’t know if owning an in-line 4 with a carb for each cylinder would be wise. (Here comes the arguments). Understanding Fuel Pressure Testing for Harley Davidson EFI Models Testing the fuel pressure on your Harley Davidson motorcycle, especially if it has an Electronic Fuel Injection (EFI) system, is crucial for ensuring optimal performance. So at this point, my fuel pump is working and not a relay problem. Enhancing both fuel efficiency and performance, the type of engine system in your motorcycle plays a crucial role in optimizing your riding experience. Replace if necessary. For a motorcycle to provide consistent power delivery, it needs a continuous flow of proper air-fuel mixture. The throttle opens as you twist the grip, fuel is drawn in as the throttle opens, it's all instantaneous. Thread starter compared to a sports bike that has old fuel with ride just fine until you nail it, then it will spit and sputter. The starter just grinds. ) I noticed RPMs would fluctuate while the sputtering happened, but I'm assuming that happened before too, just didn't notice. However, cold start problems can still occur in EFI models, especially if they are not well kept. This will typically entail a jet kit for a carbureted bike, or a fuel controller for a fuel-injected motorcycle. Bike suddenly starts sputtering/gas flows from vent tubes. You are more than likely right about the condensation causing the sputtering and hesitation while riding the bike. The motorcycle experiences a sudden power surge Fuel Systems Bike backfiring and sputtering when cold. Same response at 1/2 throttle, 3/4 throttle and WOT. Measure manifold, MAP sensor vacuum and voltage 1st. any ideas. Pulled tank and quick disconnect, but kept the pump power and fuel light leads plugged in. Suvajit bought his first motorcycle at the age of 22 and has been in love with the road since then. Motorcycle Riding 120 members. 4. Honda Shadow, spits and sputters honda shadow starts drives, but it spits and sputters when I open the gas it spits - Motorcycles question. 5. An idle that’s set too high or too low can lead to poor fuel economy and hinder the overall riding experience. I have an 2005 efi fl springer softail. Vacuum leak: Leaks in your engine or exhaust system can disrupt the air-fuel ratio, leading to a lean mixture. Water in fuel. Jump to Latest 3K views In the case of a car or truck, priming ensures there is fuel at the injectors and pressure because the tank isn't sitting above them. Carbon fouling on the spark plug. On a fuel-injected bike, connect to the motorcycles ECU with a diagnostics computer and see if the ECU needs to be returned. Reduced fuel efficiency; Step-by-Step Troubleshooting Step 1: Check the Fuel System. Rode to work the next day (8 miles each way) with no problem. https://www. If there is a problem with the air intake system, such as a dirty air filter or a vacuum leak, it can cause the engine to run lean, leading to sputtering. Another thing it will do is idle fine one minute and then not Hello, after trying the spark plugs, change the fuel pressure regulator, then fuel pressure, I don't know if I mentioned this but make sure those brown/black ground wires on the intake chamber are tight, it's a 10mm size bolt with a few ground wires. Electra glide started acting like it ran out of gas so put in a new pump,filter,etc. running at idle there is not enough heat to prevent condensation in the carb. Main jet My daughter’s 125 seems to run ok but will kind of backfire as the rpm’s drop after revving it - not a single loud backfire but kind of a sputtering. 24. If your fuel-injected bike is puttering at high RPM, chances are the issue In mid rpm's it like to sputter, after few seconds of sputtering it goes in to powerband. 0% Vapor lock Votes: 0 0. Turn the key on and the pump pumped fuel out of the hose (across the shop floor!). I haven't done a full throttle plug chop with a new plug but I have changed the plug and changed the main jet from 182 - 188 it doesn't make a difference, it still cuts out. But in carbureted motorcycles, the bike is much more susceptible to backfire problems. In fuel-injected models, the fuel injection system carefully meters the air and fuel mix, enhancing combustion efficiency without the need for a carburetor. Took it out for a ride with the GF. Cleaned FI nozzles, Cleaned and lined rusted tank, Replaced fuel filter, Replaced fuel line from pump to injectors, Replaced plugs Fuel pump assembly was rebuilt aftermarket when I bought it. Schedule maintenance checks every 3,000 to 5,000 miles or as recommended by your motorcycle's manufacturer. Jump to Latest Bike backfiring and sputtering when cold. If you close the throttle to descend. The issues we have covered above mostly affect carbureted bikes. not functionally chokes, but instead enrich the fuel/air mixture and increase idle speed, kinda like a choke. Although I don't know much about fuel injection on Harleys (H-D will not tell you much about it unles you are one of their The fuel knob has 3 setting on it. Also it smokes some and the plug is not burning clean. 200cc fml163. It is worse the higher By chatting and providing What are the advantages (if any) of a fuel injected 883 over a carbureted 883? I have a 2008 883L and am looking at a. This may cause a carbureted engine to run lean for longer periods of time as against a fuel injected system. Also head over to r/fixxit. Harley electronic sequential-port fuel-injection turns What does it mean if your motorcycle pops on decel or backfires? We explore the causes of decel pop and backfire and explain whether or not it's bad for your bike. I have an issue with my bike sputtering at mid rpm under full load. hi,recently i bought ABRO fuel injector cleaner for my motorcycle. Motorcycle Carburetor Vs. When you turn on the key do you hear the fuel pump run briefly? The fuel pump should run for about a second at power on to "prime" the system. VX Rider, Jun 13, 2018 #5. "enricher/choke", according to the parts lists that i found when i looked before i suggested to OP that his FI harley had a choke lever that needed to be used on Ducati Motorcycle Forums. then she kept acting like she had no gas. my I'd suggest checkign what fuel pressure you're getting at the engine as the next step. Brand new dhz 4stroke keeps fouling plugs And sputtering bad after a little ride, the bike will start to cut out and sputtering when I open the throttle and the spark plug with be insanely black and dry. Runs perfect now. This bike now runs but it sputters while accelerating, but once the rpm is high enough, it runs smooth. How To Fix Exhaust Backfiring On A Motorcycle? If your motorcycle exhaust is making a loud pop sound or flame coming out from the exhaust, it’s a sign of exhaust backfiring. It did it for a minute or two. Kawasaki ATV and Mule Fuel Starvation with new 2013 Mule 610 Had a full tank of fuel and it ran fine for the first 1. Don’t worry, though! Sure, even fuel-injected motorcycles can also face these issues if there is a high-flowing exhaust or the spark plug is masked. The bike runs great and is very strong! The only problem is it has a hesitation (stutter) at about ¼ throttle that can be felt only at a constant speed in any gear. Mechanic's Assistant: What is the model of your '14 Suzuki? Rmz. It gets so skewed from the required fuel mixture – the engine starts sputtering and delivering low power output. Can’t figure it out, and suggestions would be much appreciated thanks 🔧 Motorcycle Repair 🔧 My buddy has a 2004 Suzuki Volusia--one of the carburetor models, not fuel-injected--, purchased last year used in 2008 with 3000 miles. In other words when Im going say 35-40 mph. it means your air/fuel mixture is over rich. The bike cuts out almost like it is out of gas. com Free App . On a carbureted car it has the have been battling this sputtering for some time now. The fuel is sent through the injector at high pressure to atomize it into droplets just a few microns in diameter to increase the fuel’s surface area, and it is then sprayed into the intake passage through the tiny holes 🏍 General Motorcycle Discussion 🏍. that probably accounts for your low speed sputter as Harley Davidson Motorcycles. It hunts for 10 mins before it shuts off. it has been sitting there for 1 year. The most common reasons for Fuel injected rides start better in cold weather than carburetor motors. It quickly followed up with a fuel-injected one, which turned out to be something extra-special. Because fuel-injection systems don’t rely solely on air pressure to mix fuel, they can maintain the proper air/fuel ratio much more precisely than a carburetor. Before you do that, try this: Buy some Chevron Techron Fuel injection cleaner and pour a large amount, 1/2 to a full can into the tank and go for a LONG ride. When I am driving about 50mph or so after 5 minutes, my bike begins to sputter if I ease off the throttle and will pick back up with full throttle. Fuel injectors can become clogged with dirt or debris over time, leading to an improper fuel-to-air ratio and ultimately sputtering If you are rolling on a newer motorcycle, you probably are riding a fuel-injected bike. Stuck float check valve. I would start by running a fuel cleaner like Seafoam through the system to see if it helps. Browse Categories Answer Questions . new gas tank, fuel pump, oil, Discover the advancements of the Suzuki SV650, a sport-touring favorite that features an efficient fuel injection system since 2017. So i bought the bike from a guy who raced motocross, he kept the bike in tip top shape. thanks in advance paul. Jump to Latest Sputtering, back-firing and eratic idle, shutting off. I think it is less of an issue because you have like 100psi of pressure at the fuel injectors forcing it through. It’s similar to sipping those last few drops of a drink through a straw: you get a few driplets then it’s completely gone. It’s about better performance, improved fuel economy, and meeting those pesky emission standards that were tightening up. Incorrect Camshaft position. Remove Seat and Gas Tank: Follow your Harley’s manual for proper removal. I’m knowledgeable enough to be able to clean and repair carbs but I prefer fuel injected motorcycles, my first motorcycle was carbureted 96 Shadow 600 and it was a bit of a pain, after that three fuel injected motorcycles later and I’m looking at a older cruiser now that’s carbureted Never thought of the condensation during storage! Yes, I did put a new battery fully charged before taking it out of storage. Nov 6, 2010 #2 I have purchased a couple motorcycles that seemed to have a lot of sitting time (very low miles). Ever wondered why your motorcycle's performance has dipped or why it's guzzling more fuel than usual? It could be a sign of a clogged fuel injector, a common yet often overlooked issue. Mechanic's Assistant: Is the check engine light on? Does the bike stall at idle or when driving? When driving/racing. sputtering, dying. Another cause of the stuttering, bogging, and misfiring of an engine during acceleration is the air-to-fuel ratio. So how do you handle a flooded fuel injected bike? How does motorcycle fuel injection differ from automotive fuel injection? As Cycle World Technical Editor Kevin Cameron explains, the two-wheel version uses Interesting problem. In a fuel-injected engine, your bike’s ECU intelligently adjusts the air-fuel ratio as needed. I just ordered the d tool for the mixture screw, and am going to pull the carbs this A vacuum leak leads to too much air being added to the air-fuel mixture the carburetor makes. 2006 Fuel Injected Harley Wont start. Big Wanda. Thread starter sonofthunder What causes fuel injected engines to sputter? Fuel injector Votes: 1 100. My problem is when I'm driving on the roads in 5th gear. It has started running rough, like out of fuel, then runs smooth, then rough again, spits, idle's up high on its own then down again, etc. com > Model Specific > 3rd Gen The bike is probably running lean with the aftermarket air filter so its not getting enough fuel to compensate for the extra air flow. ” On a Fuel Injected Harley model, clogged fuel injectors produce the same symptoms. V. I have recently put an FMF q stealth on it, but noticed it before. Checked and cleaned the plugs. I'll add that you could sometimes bump start the early i have a 2001 harley fuel injected fatboy. As I rode home it got worse. Fuel stabilizer is usually good for some months, maybe a year. I figure it’s either burning rich or burning oil. BTW, this time I had at least 3/4 tank of gas left. In this guide, we explained the motorcycle sputtering on acceleration and the leading causes, such as carburetor issues, blocked vacuum lines, problems in the fuel system, and many other reasons that result in the it means your air/fuel mixture is over rich. Once I get in a smaller tighter track, like a SX or Around 5K rpm, sputtering/lurching on the highway, and idling randomly from 900-1100rpm (I'm set to 1400-1500. 7 grams of air is required. You can try adding some Seafoam and see if injectors are plugged, however if it runs fine at high RPM when more fuel is used that's probably not your problem. At that point the engine lost all power and began sputtering whenever I touched the accelerator. Most fuel injected motorcycles do start up in a "fast idle" mode. Harley Davidson Pan Disconnect Battery: Ensure safety by disconnecting your motorcycle’s battery. Another common cause is faulty spark plugs. All this is handled by a computer. By reducing it to a leaner position. Power to the pump is useless if the control module has not booted. Sometimes it will not act up others I'm stuck on side of road. com/watch?v=g06KbYYBx6I. Sputtering and stalling during a race. When the fuel drops below that point the engine will sputter and start to die. Unlike the mechanical components of carbs, EFI systems feature a computerized engine control unit (ECU To inspect and rectify the faulty air: fuel ratio on a carbureted motorcycle, adjust the air/fuel mixture screws on the carburetor to achieve the proper balance for different conditions. Engine timing sensor failed per dealer and replaced under factory warranty. I have been searchin for answers, Its a modified 103 engine, been built Can You Bump Start A Fuel Injected Motorcycle? Have you ever faced the frustrating experience of your motorcycle refusing to start? In this video, we discuss SOURCE: High Idle On Start-up. Because, even in the best-running engine there’s going to be some amount of unburned gas leftover after combustion, and when that residual fuel mixes with oxygen in the exhaust Hi, I recently bought a used 2014 Yz250f (efi bike) and i have been having a problem with it. Keep in mind that the engine uses fuel, air, spark, and compression in unison to run the engine. Now at 9500 miles, again, went to start up after prior day in rain and a garden hose wash, same thing. 5 to 2 quarts of oil. is a 1980 Fuel-Injected kz1000 -- DANGEROUS? KZ1000 Motorcycle Service Manual: Kawasaki part number 99924-1006-05 and The owner told me it was sputtering a lot for his final ride on the bike back then. Thing would SCREAM up to 60mph on flat ground and got like 90 miles a gallon. it only says "treats up to 20 2. Power Surging Suddenly While Riding. When your motorcycle engine is getting too much air and not enough fuel, it won’t run right. If I twist the throttle and get hte RPM's back up, it will keep running ,while sputtering, but will keep Customer: have a 2015 883, engine is sputtering. EFI and sounds like the sputtering is at the exhaust manifold not at tailpipe. The plugs when I pulled them today: BLACK WITH SOOT. Motorcycle Losing Power Frequently. Fuel injectors: Clean or replace if clogged or malfunctioning. When there is fluctuating fuel volume or pressure is injected into the fuel pumps, the pump motor forms irregular resistance resulting in power surges. Members Online. Best Motorcycle Airbag Jackets EICMA 2024: Milan Motorcycle Show This Week's Motorcycle Gear Deals. No. plenty of fuel injected bikes have chokes/enrichers. Some of the reasons for this may include carburetor, spark plug, and fuel 3. My fuel pump regulator just recently crapped out and left me stranded on the side of the road I also found my fuel filter was approximately half to three-quarters clogged. Bike was running well. Before you start to re-jet your bike, you need a clean air filter, a fresh plug (actually you need several plugs to do plug-chop tests for the main jet 3. if i spray ether into. So when the petcock is in the on position it gives access to most of the tank with a little left in reserve. There are some signs to look for if the fuel pump on your motorcycle is going out, such as sputtering and starting problems. Its the air fuel mix.
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