6L, 5 speed, almost 140k miles. Mikuni Motorcycle Carburetor Theory 101. 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. when trying to see which cylinder i pulled one plug wire and it kept. Motorcycle exhausts create some of the most adrenaline-rushing sounds if you're a motorcycle enthusiast. The problem is that when I start the bike cold, it runs awesome. 0 is running kinda rough. You also will have to make or buy a bell crank to reverse the direction of the carburetor. Get Thee To World Superbike Monterey, California, July 12-14. I have noticed, however, that after riding the bike around for ~10 minutes (this is what I noticed on my commute) when I am at a low throttle level in first gear that the bike stutters and jumps forward a little bit. The 1998 Harley-Davidson Dyna Wide Glide and all other motorcycles made 1894-2019. While it isn't necessarily relevant to the problem you're experiencing, fwiw I connect the aforementioned "Transistor Box" Red wire and "The coil terminal at the far end of the series from the "Transistor Box" Black wire" to battery +ve, not to sundry bits of bike, which are then connected to battery +ve introduces potential failure points you don't need. The engine still stumbles and backfires through the carb. Suzuki Volusia Forums : Intruder Volusia and Boulevard Forum > The Garage > Jets, Injectors and Pipes > BACKFIRE> pop pop POW !!! FIXED. Once i get on the road however i have a really bad stuttering issue that begins at 4000 rpm and wont let up till about 6000 rpm. I buy the PC V from Fuelmoto and all the problem disappear. Based upon the data you've given thus far I would remove the float bowl and blast out all of the jets, in particular your pilot jet. The backfire is more than likely excess oil igniting in the combustion chamber of the blown head gasket side. I have a 99 sporster with an 03 1200cc motor off another sporster. Idles GREAT. When Ihit the high end of each gear the bike wants tospit and sputter then occasionally. As was the case for me and others, sometimes, just taking off from the set of lights quickly can elicit the same backfiring. All of the symptoms you describe could very well be caused by a weak or intermittent spark. 2) Check that the Needle Jet (nozzle) is installed correctly. Learn how to diagnose and solve an engine backfiring problem… in case it is a problem. What would cause my truck to sputter or maybe even sounds like a backfire (1999 GMC Sierra 1500) I just changed my fuel filter, air cleaner and cleaned the throttle body. Went back to garage and fixed that. Backfiring happens all the time, in cars and bikes, you just don't hear it because the muffler/exhaust. I recently managed to get the moped running properly, albeit for only a short time. Let' s say i am starting to ride, 1st,2nd and the bike does jerk from time to time I just purchased the bike 3 weeks ago with (17k's). 4: Backfires in Exhaust Note: It is normal for many high performance exhaust systems to moderately backfire or pop when the throttle is closed from mid-to-high rpm. Whem I come to a stop, the bike runs very rough and starts to spit and sputter and eventually stalls. Is the fuel injector bad or clogged and. I'm having some major problems with the car now. The problem is that when I start the bike cold, it runs awesome. What it is, is incomplete combustion, fuel is left over, and shot into the exhaust pipes. Motorcycle Spark Plugs. 1994 EZ-GO ISSUE - Spits and Sputters - fuel pump maybe? Pretty new to the forum and have used it exclusively while working towards a fix on this cart. Harley-Davidson Fuel Injection basics It is a sad day in Hogville. Took bike out a week ago for ride and was sputtering and backfiring from idle up to 5000 rpm could not get going would die. Whem I come to a stop, the bike runs very rough and starts to spit and sputter and eventually stalls. Anyway - What I really wanted to know is just exactly what causes backfire on acceleration in the first place. The engine starts and runs fine, when I leave for or from work. 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). Did this a couple times, letting the bike return to idle after sputtering, and then let it stall out. I was test-riding it after. When I get on the throttle it picks up fine, it just does it at constant throttle position. The factory Evolution engine's ignition can contribute backfiring through the carburetor. Download and buy high quality Backfire sound effects. I have tried to recall the circumstance at each occurance, and I think it happens more when fuel tank is 1/4 or less. Get Thee To World Superbike Monterey, California, July 12-14. Wondering what is causing this? Also, sometimes when I put it in gear either reverse or forward it doesn't move. Engine sputtering and backfiring. As you ride your newly jetted motorcycle, listen to how it performs at all levels of throttle. Why does my atv backfire and sputter when i try to start it? I have a 2000 polaris scrambler and when i go to start it; it just backfires and sputters; every once in a while it will start and run just fine but as soon as you turn it off your back in the same boat as before. I originally thought it was only doing this when i would run through deep mudholes with water in them. 6) Caused by installer allowing engine to spit-back up through carb. So here's my issue. On my 1960 R50, when I hit higher rpms, or try to hit about 110/120kpm, the gas really sputters or just misses. OK guys here is the latest. Happens in all gears at that givin RPM range. But most forget that they will have to re-tune their motorcycles to avoid exhaust popping, spitting and backfiring. How to Make a Car Backfire. 2008 victory backfires, 2008 victory vegas 8 ball spark plugs, bike is backfiring and smells like gas, clean carb 2007 victory 8 ball, how to clean injectors for victory kingpin, if my motorcycle is backfiring not running good what could be a ball, new air intake backfiring motorcycle, sputtering and backfiring on a2004 arlen ness victory vegas. If I keep it floored, it won't fire again and will coast to a stop. Looking for some direction. If the engine has a flat spot, or is popping/sneezing in the air cleaner, it can indicate a lean condition. If I just have it in transport mode or just sitting there it starts to sputter/backfiring. It wouldn't hurt to have some baking soda and lots of water handy too. com/public/1zuke5y/q3m. 4: Backfires in Exhaust Note: It is normal for many high performance exhaust systems to moderately backfire or pop when the throttle is closed from mid-to-high rpm. Click to find 100+ Car Backfire of Flipboard: Hoosier Caviar, Glacial Burst, New Alamo Battle by Jaida Roberts also more Ideas like Car Backfire Desktop Wallpaers, Car Backfires When Accelerating, Car Muffler, Cars Backfire at Tract Meet, Car Backfires Will Not Start, Gun Backfires in Face, Awesome Cars On Fire, Cartoon Car, Back Fire Car Wallpaper, Fart Car, Engine Backfire, Old Car Back Fire. Harley Started to Misfire - Read More 4. 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. 3L 1988 I/O sputters and spits after 1 hr of run time Its a carburated engine with electronic ignition. When an exhaust pipe is changed, this causes an unbalanced air-to-fuel ratio. I have a 99 sporster with an 03 1200cc motor off another sporster. 1994 1500 5. Download and buy high quality Backfire sound effects. What it is, is incomplete combustion, fuel is left over, and shot into the exhaust pipes. HELP Bike is backfiring, stalling cuts out, sputtering. , while the engine is running or while shutting down. I rode for about 40-50km in the city, taking 2 short brakes in between. After 15-20 min it. Power valve blown. At the mild end, the AC just pops or even just puffs or fizzes. i was riding in congested traffic one day and being an air cooled motorcycle it was running a little warm. Sputtering Backfire - Chevy S10 With A Blazer 4. Please advise me on what the real symptoms of lean vs rich system is. 90 sputters and backfires Heat issue? It has been in the Dealer shop 4 times and the best I ever got from them was to adjust the carb once and the other three was a shrug of the shoulders, "We rode it hard in the parking lot" and a fresh spark plug. It is running horribleI call VH they suggested map. This is a lean condition if it is popping and backfiring through the exhaust. Your donations are welcome so that the cost of our server, domain name, etc. How old was the gas in the tank you topped off? Sure good chance the non-ethanol you topped off with was contaminated with water from the station running the underground tank too low before refill or you got there shortly after they did and and the storage tank hasn't had time for the stirred up water/crud to settle back to the bottom. Tuning your Harley Davidson carburetor is simpler than most think and can be performed with a few common tools. The purpose of an Air Filter is to filter the air. 12k miles on it. Motorcycle Club » Star 1100 Classic & Custom. php(143) : runtime-created function(1) : eval()'d code(156) : runtime. I had a really big backfire getting on the freeway one day and it hasn't really been rideable since. Kenyan musician John De Mathew has died in a fatal car crash, police said. I Found My Heart in San Francisco Book 8: Honesty. 1996 Nissan Sentra, 1. It wont idle. Now the spark is all good but it is sputtering in the mid-high range. While this is usually something you'll want to avoid, an explosion in the exhaust or air. A backfiring or smoking exhaust can indicate either too much fuel or too little spark, both of which can bring about power loss. The carburetor adjustments include idle speed, idle circuit mixture, mid-range and high-speed circuit mixture. They instantly jump to asking if I've changed parts or what I did. A Kawasaki lawnmower engine that backfires on start-up has a problem with fuel delivery through the idle jet. It would start backfiring and sputtering at times. What happens is that the mixture leans out enough to where is fails to ignite consistently. I took the carb off to clean it but could not find where one last vacuum line went in the only one on the right side of the carb. then backfires Motorcycle and ATV Based Engines » Engine Clinic - Mini Off Road. Don't take the chance. ) I pulled it to the side of the road and the heat pouring from the bike was blistering. Went out and finally managed to get my exhaust fitted to my downpipes using a gasket I made from a can of Macaroni Cheese Anyway, tried to start my bike after it and it wouldn't start, it was turning over but just wouldn't fire up, then it sounded like it was backfiring Battery got drained so I just fully charged it and same is happening - turning over but not firing up!. In fact, I've never seen a small battery blow up, but I've sure seen bigger ones blow, and it's not a pretty sight. 2008 victory backfires, 2008 victory vegas 8 ball spark plugs, bike is backfiring and smells like gas, clean carb 2007 victory 8 ball, how to clean injectors for victory kingpin, if my motorcycle is backfiring not running good what could be a ball, new air intake backfiring motorcycle, sputtering and backfiring on a2004 arlen ness victory vegas. If I bring it back to idle it seems to be OK for a short while, then a few minutes later stalls out. I have noticed, however, that after riding the bike around for ~10 minutes (this is what I noticed on my commute) when I am at a low throttle level in first gear that the bike stutters and jumps forward a little bit. it didn't help. The most common causes for backfiring during acceleration include an incorrect fuel-to-air ratio, a faulty ignition and bad wiring. This site is an archive only website. It sounds a bit like its bouncing off the rev-limiter. Purchase the Engine Temperature Sensor at J&P Cycles, your source for aftermarket motorcycle parts and accessories, with free everyday tech support. The car oil can become frothy. After 15-20 min it. Bike won't start - just backfires occasionally. Low rpm operation is controlled by the intermediate jet (#11). If you ride a fuel-injected Harley-davidson motorcycle, one solution is to install a Thundermax self-tuning fuel management system. The carburetor automatically adjusts the mix across the entire throttle range. Test run afterwards showed the symptoms persist. I had a really big backfire getting on the freeway one day and it hasn't really been rideable since. Take a seat behind the dash of my newly purchased 1983 Honda Nighthawk CB450SC as I go for a short test ride. A Kawasaki lawnmower engine that backfires on start-up has a problem with fuel delivery through the idle jet. So here's my issue. Bike has andrews ev46, mikuni 42mm, sampson big guns. Recent barn find has issues at low RPM from about 1,500 to 2,500 RPM. Again it should be emphasized, the #1 cause of carburetor related problems on a Harley or other V-Twin motorcycle is VACUUM LEAKS. Also check out our overview of motorcycle webshops at Bikez. Is it possible a needle or seat in the carb is stuck/damaged from sitting (and the. ) I pulled it to the side of the road and the heat pouring from the bike was blistering. Ok, so I've had this taotao for 6 months or longer now, all I've done is install a new carb with larger jet (95) from scrappy dog. A mower th at backfires is irritating, but thankfully backfiring is not a danger to your engine and lawn mower. I've read some people claim it is due to a rich condition and fuel is getting into the exhaust and detonating. The plugs looked lean again, like they did before I increased the jets when I first got it running. Deprecated: Function create_function() is deprecated in /home/forge/primaexpressinc. 2010 Polaris Utility Vehicles Prices and Values Select any 2010 Polaris Utility Vehicles model An American manufacturer, known for their snowmobiles, Polaris Industries was established in 1954. The Briggs Vanguard carburetor pushes to increase speed, and this must be reversed to pull to increase speed. I immediately turn around to try and limp home. Honda GCV160 sputters, backfires, and stalls I have a GCV160 engine on my lawn mower, about 5 years old, has had the same problem for 4 years. If you notice stumbling or sputtering, it can indicate a rich condition. I wouldn't do a thing to the carb just yet. 1996 Nissan Sentra, 1. my mkIII golf 2. I mean I can go through every gear and it will accelerate like any normal running bike would. The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE FORUM > Sportster Motorcycle Intake and Exhaust > Sportster Motorcycle Air intake, Carburetor, EFI, Fuel, and Exhaust: intermittent popping/backfire on acceleration. It pops and backfires coming off full throttle. I noticed after the car warmed up and on the way home, the car would pop and backfire though the exhaust on deceleration. 2006 yamaha roadstar cast - i had 4,000 miles on the bike. After replacing the clutch cable (including removing gas tank and putting it back on), my bike has trouble with jerking periodically. If I feather the throttle, I can keep it running and get it driving. All carburetors work under the basic principle of atmospheric pressure. Typical stock engine with dyna type muffler will need #52. [B]03' Road King sputtering and just plain running like crap[/B] When the bike warms up it sputters and hesitates and even backfires when running around 2700 to 3000 rpm. Specifications. The heat from the pipes then ignites the vapor and boom, backfire. The carburetor adjustments include idle speed, idle circuit mixture, mid-range and high-speed circuit mixture. my club car uses a fe290 kawasaki engine with a keihin carb starts and runs fine. When a motorcycle backfires, a malfunction in your. When overheated, the engine can backfire or detonate while operating or when being shut down. Hi, I've been dealing with an annoying problem for months, and the latest condition does not throw a CEL so we're not sure what to do. Let' s say i am starting to ride, 1st,2nd and the bike does jerk from time to time I just purchased the bike 3 weeks ago with (17k's). Idle mixture screws were set at 1 3/4 out. Other causes of backfire are bad or weak fuel pumps, low fuel pressure and clogged fuel filters. 5 main jet, shave white spacer to half thickness or replace with small washers. However, as I accelerate it spits, sputters, and backfires. Harley Not Starting – Read More 3. Intake manifold air leak: A lean condition due to an intake manifold air leak can cause backfiring. Only in mudholes. Take the old battery completely out of the system. Runs Rough, Cuts Out, and Sputters Under Load. Something interesting though: Talked to a suzuki guy who told me the clutch start saftey switch being de-wired might cause this. At the extreme end, the air cleaner backfires so loudly, it actually stalls the engine. Loss of Power, sputtering and backfire. Whem I come to a stop, the bike runs very rough and starts to spit and sputter and eventually stalls. But most forget that they will have to re-tune their motorcycles to avoid exhaust popping, spitting and backfiring. I mean I can go through every gear and it will accelerate like any normal running bike would. Truck had been overheated several months prior and I assume it was HOT. Get a small piece of copper wire that will fit through the jet and make sure you don't have blockage. Terms often used are: Stuttering Hesitating Running Rough etc etc. Do the head gasket(s) 1st then go from there. I drive for about a mile and as I'm climbing a hill the quad starts to sputter and backfire. it did it with my edelbrock 1406 and edelbrock q-jet. Acts like it is either running out of gas or. A rhythmic popping sound which is not as prominent as lean under power backfires. When Ihit the high end of each gear the bike wants tospit and sputter then occasionally. The CV carb is dependent upon vacuum to function properly. Plugs are getting fouled quite quickly too. This mainly happens when it's idling, or when I'm slowing down to downshift with the clutch in. It runs fine until half throttle, but go past that and it sputters and backfires. 7 patch did not fix tech issues sadly. Rough idle, low power on acceleration, backfire on acceleration along with black smoke, hesitation Out of the blue the 75 FJ40 started this behavior after starting it up two days ago. Accelerates GREAT. Now, it kinda sputters or backfires and jerks a bit when I accelerate from a stop, then it runs fine until I try to get above 35 mph, when it does it again, but worse. My first guess was bad gas and tried some different gas sputter and backfire when cold - Triumph Forum: Triumph Rat Motorcycle Forums. Get a small piece of copper wire that will fit through the jet and make sure you don't have blockage. 1996 Nissan Sentra, 1. After cleaning The bike ran great with no sputter , no backfire, very quick and easy start. Hi all, I just bought my bike about 2 weeks ago and for the most part it runs well. Honda motorcycle carburetors deliver a precisely metered air/fuel mixture to the engines. Backfiring happens all the time, in cars and bikes, you just don't hear it because the muffler/exhaust. hope you can hit the road sooner with a smooth run. A repetitive backfires are generated when the engine is simply running at idle or at cruising speed and can be inline with the engine RPM. If I try to give it the gas, it does the same thing but only more. Power Commander Motorcycle Fuel Injection Tuning Module. Hello I am new to this forum so please bear with me: I have a 1992 Galaxy W/A with a 4. I rode it 5 miles to a friend's and on the way home it gave me fits. The other day, I was riding up a fairly steep hill. Terms often used are: Stuttering Hesitating Running Rough etc etc. It runs fine until half throttle, but go past that and it sputters and backfires. Are you backfiring, or just the normal pop and sputter noise you get when from any bike when you let up on the throttle. Luckily, I wasn't too far from home, and was able to milk her back to the garage. trojan wrote: So my KZ 1100 1981 is backfiring from the exhaust + carbs and sputters when cold. New Exhaust System = Carb Jetting? When you upgrade your bike with a new exhaust system, air box or hi-flow air filter it may upset the air to fuel ratio creating a mixture that is too rich or too lean. 90 sputters and backfires Heat issue? It has been in the Dealer shop 4 times and the best I ever got from them was to adjust the carb once and the other three was a shrug of the shoulders, "We rode it hard in the parking lot" and a fresh spark plug. Backfiring happens all the time, in cars and bikes, you just don't hear it because the muffler/exhaust. at the next hill the quad can not make it up (sputtering and boging down as if no fuel). Waited ten minutes. If there is a really good shop outside of the area, I'd like to know that too. How to improve, understand and troubleshoot motorcycle carburetion. Popping, Sputtering, Backfiring, Stalling I knew it had sat so I figured it might take a little bit of work to get it running perfect but it is kicking my a$$. What causes backfiring or popping in the exhaust of a v twin motorcycle engine? Could be a hole or leak at one of the joints or cylinder head bolts / nuts. Been reading all your forums before signig up with nothing working so far, so I thought I put my info In maybe I missed something. a engine running for a little bit and sputtering out sounds like a fuel starvation issue, this can be caused buy a series of things, a clogged fuel filter, a weak pump, ect ect, the best thing you can do that i recommend would be too see if you can get any diagnostic codes with a scan tool or something and see what it tells you, and test fuel pressure and see if it is up to spec. Now we have 10% gas that turns to varnish in about 9-10 months mainly in the carb that is vented to the air. It was worse going down the hill, but also did is randomly on level ground. I rode for about 50 miles and then out of nowhere I started sputtering and backfiring. it idles great and runs smooth until after about 2500 rpms and it gets under load or you stab the throttle then it backfires or pops. Then it starts to sputter and within 30-45 seconds has started major hesitation and backfire before finally stalling completely. The purpose of an Air Filter is to filter the air. Despite this I call Suzuki telling that I saw here, in the forum, that somebody get a new ECU. Hi, I've been dealing with an annoying problem for months, and the latest condition does not throw a CEL so we're not sure what to do. New Exhaust System = Carb Jetting? When you upgrade your bike with a new exhaust system, air box or hi-flow air filter it may upset the air to fuel ratio creating a mixture that is too rich or too lean. Tire Pressures […] Reply; C Dennis January 27th, 2018. it's been backfiring / sputtering and bogging down when i try to accelerate quickly. com so its time to change and make this section more friendly to our visitors. The Briggs Vanguard carburetor pushes to increase speed, and this must be reversed to pull to increase speed. Air must be clean before it mixes with the fuel and burns in the cylinders of an engine. The RZR570 runs a bit on the lean side from the factory and can have some backfiring under decel. I hope the backfiring didn't damage anything, it only happened twice and it wasn't very big. Anyway - What I really wanted to know is just exactly what causes backfire on acceleration in the first place. Idle mixture screws were set at 1 3/4 out. Still would not idle very good but ran pretty good. Went out and finally managed to get my exhaust fitted to my downpipes using a gasket I made from a can of Macaroni Cheese Anyway, tried to start my bike after it and it wouldn't start, it was turning over but just wouldn't fire up, then it sounded like it was backfiring Battery got drained so I just fully charged it and same is happening - turning over but not firing up!. then backfires Motorcycle and ATV Based Engines » Engine Clinic - Mini Off Road. This mainly happens when it's idling, or when I'm slowing down to downshift with the clutch in. What Causes Backfiring on Acceleration? Backfiring during acceleration occurs when ignition takes place in the intake or exhaust instead of the combustion chamber. it idles great and runs smooth until after about 2500 rpms and it gets under load or you stab the throttle then it backfires or pops. New AMAL 106 and AMAL Needles. i turn the boost down or up, richen or lean it out more. Mp3 previews are low resolution, the purchased WAV files are professional quality, the same sound effects used in hundreds of Hollywood feature films. -Our no more backfire map to eliminate the lean backfire on your stock unit. Before cleaning it the filters I cranked it up and rode it around the yard. This was a. Cuts out, sputters, wont idle, starts hard, won't run down the road with out cutting out and bucking and sputtering. Accelerates GREAT. The dwell was set to 30 while the vacuum advance was disconnected. Pump blown out. This is common. Sputters occur when riding solo or with my lady on the back. if all steps have been made and still sputters you need a tune up( change spark plugs, clean injectors/carburetors , new air and fuel filters, oil change (suggestion not a must), valve setting and check engine timing. It was the carb that is pre adjusted/jetted and was supposed to come with new air filter (never got one) I also drilled holes in my exhaust. Its worse when it gets warmer. From the Suzuki Savage forum. It's a little taller than the plastic ring but I figure it'll settle down eventually, and I can always adjust clip positions. Got rained on heavy. Spits, Sputters, Misfires and Stalls - Duration. The problem is that when I start the bike cold, it runs awesome. I also notice a tendency for it to die out when I first take off in the am. When an exhaust pipe is changed, this causes an unbalanced air-to-fuel ratio. Hi all, I just bought my bike about 2 weeks ago and for the most part it runs well. 07 M1000 sputtering and backfiring. Allow it to absorb into the gas and not cause the engine to sputter and miss. It still barely idled but when I would give it any gas it just spits and sputters and backfires a little. These are things you can do or check to help solve this problem outside of just desmogging the motor. The most common causes for backfiring during acceleration include an incorrect fuel-to-air ratio, a faulty ignition and bad wiring. The dwell was set to 30 while the vacuum advance was disconnected. Now the spark is all good but it is sputtering in the mid-high range. Please advise me on what the real symptoms of lean vs rich system is. 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. So the problem is from idle to about 3000 or 3500 rpm it starts surging/sputtering and backfiring really bad. 1984 XV1000 backfires and sputters. Learn how to diagnose and solve an engine backfiring problem… in case it is a problem. 1996 Nissan Sentra, 1. 2, the engine is at 260-268 deg at idle, the cdi-revbox is around 120-140deg, the coil is at 80-90deg, no lose. Air must be clean before it mixes with the fuel and burns in the cylinders of an engine. -Standard Dobeck map +10%. Then it just starts to sputter out, die, etc. consumer feels may lose control of motorcycle. Engine sputtering and backfiring. The battery must have been weak to begin with. This morning on the way to work as I was going up an on-ramp (uphill) to get on the highway, the truck began to sp. Then it started returning within two days and went back too how it was, long start and backfire when releasing throttle but not loud but consistent after another kind of like a growl. I recently managed to get the moped running properly, albeit for only a short time. It will sputter a bit less and stay running at higher rpms, but I still notice it. Possible explanations: a. Test run afterwards showed the symptoms persist. First of all, you should always warm up your motorcycle to normal operating temperature before riding it. The problem list below will give you an idea of what causes could be generating this condition. The result of backfiring through the AC can be mild to wild. Boyer electrics, connections look solid, good spark. A problem with the fuel filter leads to starting issues. All of the symptoms you describe could very well be caused by a weak or intermittent spark. I'm new to motorcycling and new to this list. Pump blown out. Suddenly, today on the way home. No fuel spray or sputtering. A backfiring or smoking exhaust can indicate either too much fuel or too little spark, both of which can bring about power loss. I drove it home and it started sputtering during acceleration, and stops sputtering once I reached my cruising speed. my golf cart starts and runs, then after running for sometime that could be up to a hour it will die and not start for several mins, has been as long as 10-20 mins before it will cough a couple times, backfire a couple times and then runs again. The buggy still sputters and tries to die after a run at full throttle. This site has around 95 repair and maintenance photos of the 1996 Honda VLX Deluxe motorcycle I used to own. Just like many on here way to lean from the factory. When Ihit the high end of each gear the bike wants tospit and sputter then occasionally. SUZUKI S40 / SAVAGE TUNING GUIDE. But most forget that they will have to re-tune their motorcycles to avoid exhaust popping, spitting and backfiring. The use of precise holes to deliver a burnable fuel is similar to the motorcycle carburetor, thus the name. Don't take the chance. And worse, many claims of lean conditions and rich conditions are contradictory. I rode for about 40-50km in the city, taking 2 short brakes in between. How old was the gas in the tank you topped off? Sure good chance the non-ethanol you topped off with was contaminated with water from the station running the underground tank too low before refill or you got there shortly after they did and and the storage tank hasn't had time for the stirred up water/crud to settle back to the bottom. Based upon the data you've given thus far I would remove the float bowl and blast out all of the jets, in particular your pilot jet. I have a 99 sporster with an 03 1200cc motor off another sporster. I have removed and cleaned all jets in the carb, put in a new piston and honed the bore, it has good compression, new correct specification spark plug. Correct by adding a resistor harness to eliminate susceptibility of component in electric harness control module to fail. Other symptoms may include a strong smell of gas while the motorcycle is running, a flooded engine, and gas getting spewed out of the exhaust pipes. This site has around 95 repair and maintenance photos of the 1996 Honda VLX Deluxe motorcycle I used to own. any thoughts? it sat in the garage all winter with a full tank of gas. The dwell was set to 30 while the vacuum advance was disconnected. This ignition coil symptom is a sign of the coil’s failure and an indication that the vehicle is probably getting further damage. But i noticed it wouldn't do it in deep water alone. Add fuel to the cruise range, then ride the bike and see if there is a change.