engine cutting out

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Old Oct 18, 2009 | 02:35 PM
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engine cutting out

is there anything possible to do to get my engine to stop cuttin out when i do long wheelies or circle wheelies?
Old Oct 18, 2009 | 02:42 PM
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Re: engine cutting out

sounds like a stuck float clean out your carbs properly
Old Oct 18, 2009 | 03:00 PM
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Re: engine cutting out

Sounds like the float bowl is running out of gas. Imagine your float is vertical. Now you have the low speed jet higher than the fluid draining, as the float more like trickles the fuel in. The float bubble is higher, closes that needle/seat sooner. Get it? You suck the bowl level down with the low speed sucking air = "cutting out"...

I'd bend the float tang to where it would almost let the float bowl drain out of the jet holes in the venturi. I'd also close the petcock each time I stop the engine or gas will drain into the crankcase, you forget. I would use a vacuum assist petcock so the flow stops once the engine is turned off. This way, you have that leaker being horizontal, but no leaks in the vertical.

Last edited by PazUp; Oct 18, 2009 at 03:03 PM.
Old Oct 18, 2009 | 03:23 PM
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Re: engine cutting out

yea thats what it is, its runs out of gas
Old Oct 18, 2009 | 03:28 PM
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Re: engine cutting out

After this happens , do you smell gas or see it leaking from the bike ? See if there is gas in the air filter or air filter housing . If there is , your carb is dumping fuel out of the carb from the top when you wheelie , cause the carb is actually almost upside down when you are in this position .

I don't have this problem , but i have heard other people having this problem . I remember Towlieee saying to try turning your fuel on-off valve to 3/4 open or even half open . Then try wheelieng and see if it helps .
Old Oct 18, 2009 | 03:31 PM
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Re: engine cutting out

i didnt even think of messing with the fuel on-off swithc
Old Oct 18, 2009 | 03:33 PM
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Re: engine cutting out

Well then if we want to see if the gas is running out, we let the bowl fill with a dead engine/petcock on. Drain that into a plastic water bottle. What level you got?

Then we do a one handed wheelie, turn the petcock off once the bike feels like it's running out of gas. You then pull the petcock closed. Stop the bike just as fast. Then with the petcock off like the first fuel level as your base amount, you then drain this bowl, check how much is remaining?

Do you have less than the static? Dare you go!
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