Thanks to everyone who replied to this thread. Sorry I missed the thread on
this a few weeks ago.
The oil pressure is back to normal.
This morning I went out and checked the oil pressure again. Still very low.
Couldn't get it above 40 PSI. Pulled the regulator spring/ball bearing and
cleaned it thoroughly with brake cleaning fluid. Reassembled and adjusted.
I now have 75 PSI at 2K rpm. (Yes I know the spec is 70 PSI, but I believe
it'll settle as the engine heats up).
I'm now going to go change the oil and filter.
To answer a few questions you had:
I use Castrol 20W-50 religiously. Never had a problem before. If Castrol
creates a film layer here wouldn't cause problems elsewhere?
The oil pressure runs around 5 PSI at idle after a long hard run at high
revs. I've always known this to be normal. After a short time the pressure
starts climbing back up.
Normal idle pressure is around 30-40 PSI.
The engine has approx. 10K miles on a complete rebuild.
Oil level is perfect.
The filter is a NAPA Gold 1516 using the spin on adapter. I've been told
this is the best filter for the money.
Thanks again to the list. Maybe I'll read the emails better next time.
John in San Diego
'67 TRactor4A
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