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Brent and listers,
I had this problem on an M37 a few years ago. The problem is caused by a
non-working PCV valve. In my case, someone had disassembled the plumbing either
side of the PVC valve and reassembled it with the PCV installed backward. It took
me a while to find the problem. I too had oil in the carburetor air intake elbow
and in the distributor (via the vent lines). I would clean everything, run the
truck, and in a very few minutes the engine would die. Oil on the distributor
points again! The crankcase would pressurize, blowing oil and oil vapor up the
filler tube, then through the breather vent tube to the carb air intake elbow.
>From there the oil entered the vent tubes to the distributor, coat the points, and
the engine would die. I also had a lot of gasoline mix into the oil during the
many starting attempts. Be sure to "sniff" the oil dip stick and if you smell
gasoline, change the oil before you run the engine at any speed much above an
idle. Experience here too! Spun bearings = major overhaul.
Claude.
Brent McClearen wrote:
> *This message was transferred with a trial version of CommuniGate(tm) Pro*
> Guys,
>
> Re: 1963 M37
>
> A friend of mine keeps finding oil pooled up in the "S" shaped aluminum
> breather tube, between the Oil Bath Cleaner and the Carburetor. And also
> getting into the vacuum lines for the distributor, etc. There is a port on
> the bottom of this crooked tube, and I think it has a petcock screwed into
> it. Should it have this, or be open to allow suction to keep the low part
> of the tube cleaned out? Truck runs great, fresh carb rebuild, etc.
>
> Thanks,
>
> Brent
>
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This archive was generated by hypermail 2b29 : Thu Mar 02 2000 - 22:30:24 PST