On Thu, 14 Sep 2006 14:54:12 -0400, Larry wrote:

"HarryV" wrote in news:1158252466.868700.179920
:

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.
///
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.
///

Then there was my old Chevy, whose oil level would rise.
Co incidentally, the transmission oil level would go down.

Hard to credit, but the modulation valve in the transmission which is
plumbed to the engine inlet manifold, had a pin hole, and passing
transmission oil.
Not sure how it got to the engine oil - I'm guessing via the inlet
manifold to valve cover pipe - this is intended to eat engine blow by
fumes.
The moral being - engines do the darndest things.....

Brian Whatcott Altus OK