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Re: bike is sputtering when give it gas. sat for 2
Make sure battery is full,not just charged. if the sputter is still there you may need to clean air filter,fuel fillter or carbs may need to have trash removed from inside at the fuel float valve-seat and jet.
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you might have bad gas when it sits for months the gas will separate. best to do is run all the gas out of it till it stops running. have a 2 gallon or 5 gallon gas can with you and fill it up when it finally stops. the other thing you can look for is a rust ground. I had this problem with a saab 9-3 took me months to figure it out. the battery and alternator you can go to any local parts store and have them test the charging system to see if there is any problems
If the bike sat without being used over the winter It could be bad gas. if gas sits without being used for an extended period of time it destabilizes and gums up carborators and fuel injectors, you need to add a fuel stabilizer to gas when storing for winter. To fix the problem the gas has to be drained from tank, then refil with fresh gas and appropriate amount of carborator/fuel injector cleaner/treatment. Then start the bike and let it run it should clean itself out and start running smooth. If bike did not sit unused for winter its possible they installed the wrong plugs sometimes they talk you into spending more money on platinum or split fire/gimmick plugs (always use the exact same plug that came in the bike when it was new!!!!!)
The trick is to get out there and fire it up every week and run it for several minutes. Short of doing that - turn the fuel off and run the carbs out of gas before storing. Drain the old fuel out in the spring and refill with fresh fuel. You can add some fuel system cleaner/drier to the fresh fuel. Personally - I simply run the bike every week and add some fuel drier - like STP fuel treatment during winter months. I have never been a fan of the fuel stabilizers - unless you are talking about a huge volume of fuel, like on a boat. Running the bike every week keeps the battery charged, too.
Most likely the problem is not the fuel filter. Since the bike sat through the winter, it is probably fuel gummed ports/jets. This is happening more often especially with the ethanol blend of fuel. In the last few weeks, as riders bring their bikes out of winter storage, there has ben many with the same problem as yours. I recommend pouring at least 1/2 can of SeaFoam in the tank, lock down the front brake and rock the bike back and forth to mix the additive. Once it is mixed, crank the engine and run at high idle for a couple minutes. Let it set for an hour or so to give the SeaFoam time to work. Crank the bike, and ride normally. It should clear up. If it doesn't clear up in an hour or two, you may have water in the carb bowl that will have to be drained.
If the bike sat for quite a while, and you didn't drain the tank and carbs, your gas probably gummed up the carbs, jets, needles, etc. If you had them cleaned... this wouldn't be the problem although it could still be a fuel problem. Have you checked the fuel filter? I have found that using a gas stabilizer when the bike is not in use, keeps this from happening.
Before I ever take my bike into the shop, after winter sitting, I always run a mixture of Sea Foam (get it at Wal-Mart) with a full tank of gas for the 1st run of the season. This will take care of most fuel issues.
If the bike ran fine prior to putting it in storage and all you did was drain the fuel and disconnect the battery, its likely moisture ( condensation) developed in the carbs while it sat. this type of thing happens when fuel is drained. Your best bet is to remove the carbs and clean the jets. Its my opinion and experience to put fresh fuel in a bike along with (stable) fuel treatment prior to storing them. With the stable added to the fuel, the fuel will hold good for about 1 year.. Replacing the battery and starting them and letting them warm up to operating temp monthly while in storage is always a good idea..
I hope this helps..
hi,sounds like you have a blocked main jet in one of the carbs,when the fuel sits in the bowls it will evaporate and leave behind a residue that is quite difficult to remove even with a carb cleaning compound,what i do in this case is remove the carbs,remove all the jets,place all the jets in a saucer or dish and fill with petrol,leave them for a few days,this will soften the residue,then use compressed air or a crc typecan with carb cleaner and force clean them by squirting the fluid through them,do not use(as some people do) a piece of wire to clean through them,this will scratch the inside of the jet and alter the fuel flow charicteristics of the jet and render it all but useless,once you have them all absolutely spotless,reassemble and put the carbs back in,just about put money on it that your problem will dissappear,hope this helps...cheers
The most likely problem, especially with the bike sitting up during summer, would be gas has gone stale. If the bike sits long enough, the gas will actually turn into a varnish.
Drain the tank, refill with fresh gas, and let it run a while.
Basically, you have to run out whatever gas is between the tank and the cylinders, so the fresh gas can get to the cylinders.
I'd put a box fan blowing on the front of the bike to help keep the ehat down. Blip the throttle after a few inutes. Depending onhow much old gas is 'stored' in the fuel lines and such, it may take 10 or 20 minutes to burn out the old gas. Keep blipping every few minutes, and let it cool down after 20 minutes. Some bikes have short fuel path and clear in 2 minutes at idle, I've seen custom setups that took over an hour.
but somehow never managed to. So now I am trying to sell the thing and I can't get it to run. It ran like a champ before it sat. If it sits for a while it will run for 30 seconds or so and then sputter and die. Then it won't start for a while but turns over strong. I figure it has to be a fuel issue. I put some fuel stabilizer and cleaner into the tank; no dice. I pulled the tank, drained it, put new fuel in it, pulled the carb, sprayed it out good, put it all back together and...still the same. Not sure I have the tools/skill to completely disassemble the carb and soak it. Confused Any ideas of where to go from here? This thing isn't worth much to begin with and probably not worth anything if not running! I can't spend the money on a mechanic to fix it because that would pretty much defeat the purpose of selling it! ,Sounds like it's taking a while to refill the carb bowls. I'm guessing before the carbs. Try pulling the gas line and aiming it into a gas-can or bucket to see how fast it comes out. If it's slow it could be in the petcock, clogged fuel filter or tank vent. If the petcock has a prime position try that, open the gas cap, replace or try quick without the filter. If the fuel flows freely from the line the it's probably something in the carbs. Could be air, spark or compression too. Does it smell like gas(running very rich)? I'm just guessing from what I've tried to fix my bike, it's finally running great after fixing half of the above.,,,
but somehow never managed to. So now I am trying to sell the thing and I can't get it to run. It ran like a champ before it sat.
If it sits for a while it will run for 30 seconds or so and then sputter and die. Then it won't start for a while but turns over strong. I figure it has to be a fuel issue. I put some fuel stabilizer and cleaner into the tank; no dice. I pulled the tank, drained it, put new fuel in it, pulled the carb, sprayed it out good, put it all back together and...still the same.
Not sure I have the tools/skill to completely disassemble the carb and soak it. Confused Any ideas of where to go from here? This thing isn't worth much to begin with and probably not worth anything if not running! I can't spend the money on a mechanic to fix it because that would pretty much defeat the purpose of selling it! ,have you checked the air filter?
another problem might be a clogged tank vent. try running the bike with the gas cap open and see if that works.,,,
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