"HarryV" wrote in news:1158252466.868700.179920
@e3g2000cwe.googlegroups.com:

Mechanical fuel pumps have a diaphragm. If this gets even a pinhole
leak, the leak dumps fuel into the crankcase each time the pump
strokes. At least on the pump models I encountered.



Good call, Harry. I'm trying to figure out how a blown head gasket could
cause GASOLINE to be dumped into the crankcase that is ALREADY a gas when
it enters the head where the blown head gasket the others are touting as
the cause resides. Blown head gaskets result in carbon or oil in the
water, which would simply be blown overboard in a directly-cooled
freshwater-cooled boat. I don't think there's supposed to be raw gas
around the head gasket....

Worse than your experience was my 6.2L DIESEL V-8 direct fuel pump in the
Chevy P-20. The hole in the diaphram DRAINED the fuel filter on top of the
engine back down into the crankcase every time it sat overnight. The
siphon effect pulled it back through the injection pump, making starting a
long, drawn out cranking process. The new primary mechanical pump
instantly restored fast starting in the diesel and eliminated the fuel-in-
the-oil problem. Good call....

--
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