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My 400's flooded REALLY bad. It's backed up really far, after running it and shutting it off, the throttle body is full of gas. Tried running it and spraying some carb cleaner down there, probably just made it worse. Exhaust pipe is shooting out raw gasoline.
I don't think the float is stuck, I think the flooding started because of a choke hangup that I fixed, and I've just made it worse progressively by trying to start it.
Does it just need to sit over the weekend? Any advice?
Remove the spark plugs and clean them. That should help, but if it's just pumping gas into the venturis, then you probably have a problem with the float or needle valve.
Well, what I thought was serious flooding turned into a carb rebuild. The parts are soaking now. You guys were right! In the needle valve I found what looked like an amber-colored fingernail clipping. Dried gas and gasket material or something, don't know.