An expert who has achieved level 2 by getting 100 points
An expert that got 5 achievements.
An expert whose answer got voted for 20 times.
An expert who has written 20 answers of more than 400 characters.
Re: sputters past 1/4 idle no power
Put the bike on level ground, support on stands, switch off petrol and drain the carbs. Close the carbs and using the pipe from the tank (disconected) to the carbs fill with a quality carb cleaner and leave overnight. Drain the carbs, connect everything back up and start up. Try and get into the habit of switching off the petrol before you stop the engine, just to partially drain the carbs, esp'ly if you intend to leave for any period of time.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Hi Todd, sure sounds like a fuel problem, since i dont if you have carb or fuel injection lets start with your carb. remove the float bowl and see if there is water in the bottom. if so remove fuel tank drain it completely clean the filter then air blow it dry also mahe sure the line from petcock to carb is not pinched or bent to restrict flow then check your vacuum line to the petcock is attached at both ends and is not cracked max vacuum is necessary to pull the diaphram in the petcock to allow fuel to flow, disasemble petcock and check rubber diaphram for cracks or pinholes. reasemble petcock and check with vacuum gauge to make sure its holding vacuum. put 1 gallon of uncontaminated fuel back in tank and take it for a ride.
if you have fuel injection, check fuel pump pressure sorry i dont have specs on that but call your local service dept and they can hook you up. clean fuel filter then blow dry tank and proceed as above. if none of this helps get back to me and we can try some electrical trouble shooting good luck
If the motorcycle has sat more than 6 months with reformulated gas, it more likely has jets plugged up and will need a carb cleaning. Plug jets will cause sputtering and bogging down when the engine is loaded.
If the bike sat up for the winter, it's a real possibility the carb jets and fuel passages are gummed up. If this is the case, I recommend 1/4 to 1/2 can of SeaFoam added to your fuel. Lock down the front brake and rock the bike back and forth to mix the additive with the gas. Crank the bike and run at high idle for a few minutes, and since it is rideable, ride like you normally do and see if it gets more responsive after an hour or so.
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..
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.
from your description, i would sugest you make sure fuel is getting to the injector unit, remove the fuel supply hose.if you have spark at the plugs and fuel getting to the injectors you have isolated the problem. i would also drain the old fuel when you take the hose off and fill the tank with high grade fuel. bikes dont like old gas.
you shouldnt have to resync the carbs as long as you dont touch the mixture screws or the screws for the throttle blades. you wont have to pull the jets completly out to clean them just spray the heck out of all the orifaces with carb cleaner once you have them pulled apart. Also whe you put it back together make shure the carb seal to the engine and airbox are tight with no leaks, this will make it run bad also
got my side stand switch fixed and took her out for a spin and had yet another problem. When im riding it and take off it kinda sputters unless i crack it all the way open and then it runs out great. It seems that the problem is is just like at half throttle taking offit just sputters. A ny suggestins? The bike had sat for about six months before i got it. also VR 2000 Enduro
Your carbs are clogged somewhere because the gas sat so long -- it turns to varnish over time and it likely has clogged your low-speed jets. (When you crack it open it's on the main jet and gets enough fuel.) You should get a product called SeaFoam, which can help clear carbs. If that doesn't work, you'll need to take the carbs apart and clean out the little passages.