Unless you have a lot of time, I'd just get a new oil pump at this
stage. Long as you are in there and dirty, just swap the pump and
put er back together. Only one time getting oil up to your elbows
or armpits that way. Since it was a sudden change in pressure, and
you have checked real pressure, it seems to me that the pump or an
obstruction on the sump are the likely culprit.
10 psi at idle (cold) on my new HF gauge. :(
How do I check the relief valves?
Pull the oil pan next?
Rick
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