Posted by Oscar on Friday, July 19, 2002 at 8:01PM :
In Reply to: Oil Pressure question posted by Tony Parent on Friday, July 19, 2002 at 4:35PM :
Check the pressure relief spring is good and that the plunger moves freely. If the plunger is stuck part way down the pressure will drop to zero once it warms up.
Sounds like time for a rebuild more than likely.
oscar