"Not a Moron" Fuel Valve Question?
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Posted by Donnie on June 04, 1998 at 19:17:54:
In reading the question concerning leaving the fuel valve on sediment bulb open and discovering gas in the crankcase, I have a dumb question, how does the gas leak into the crankcase? Granted if the float or needle valve don't seal off completely the gas will flood the carburetor. Since most tractor carbs are downdraft it would appear that the carb would have to fill up, then the intake manifold fill up, then perhaps an open intake valve would fill a cylinder, then perhaps the lighter viscosity gas could leak past the rings and seep into the crankcase. Is this what happens or am I missing something?
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