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Re: Float valve sticking problems


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Posted by Steve@Advance on April 12, 2021 at 12:49:03 from (24.182.105.128):

In Reply to: Float valve sticking problems posted by JAG5876 on April 12, 2021 at 11:55:12:

That is not typically a problem with a running engine. Sticking from sitting with a bowl full of E10, yes it happens, but that is from evaporation leaving residue behind. That is the problem the non stick needles are addressing.

I wonder if there might be another problem, like low fuel flow. I assume this is gravity flow, no fuel pump. And we are talking sticking shut, not flooding.

Is the tank vented? Try loosening the cap see if that helps. Even though the cap may say vented, it doesn't mean it really is or it may be clogged with a bug nest.

Have you done a flow test on the carb? With the engine off, fuel valve on, remove the drain plug, see how it flows. Should have a full flow, not slow to a drip or stop. If insufficient flow, start tracking back to the tank to find the restriction.

Are there any inline filters? They don't work well with gravity systems. If you feel it needs a filter, use the screen type, not a paper.

What type fuel line is on it? Should be a steel line, not copper. It needs to be the most direct down hill route possible and still kept away from the exhaust as far as practical.


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