The fuel pump can continue to deliver up to one-stroke's worth of
gasoline after the engine is off. The cam cocks the pump and the spring
delivers, so if the engine stops with the cam out of the way of the pump
lever, one full pump's worth of fuel can be delivered. Now that
wouldn't be enough to flood the engine compartment, but it could make a
small puddle.
Donald.
Nolan Penney wrote:
> My immediate thought is that something is missing from this story. When
> the engine is shut off, the fuel pump is shut off (if mechanical), so
> there is no supply of gasoline to overwhelm the float and continue
> filling the bowl to enable overflowing. So it seem something is missing
> from the story here. Do you have an electric fuel pump that is failing
> to shut off? Do you have a heat percolation problem from the exhaust
> manifold?
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