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I added a needle valve and purchased a new pressure gauge even with this set oil pressure still read 7 psig when engine warmed up.
I took oil pressure switch to autoparts store their data indicated models available set to close a either 4 or 10 psig. If gauge is correct this one must be set at 4 psig.
After removing engine boat placing on engine stand and removing crank case we found all three internal plugs were inplace. We check the flyswheel end main bearing clearance with plastigauge, it checked out greater than .003 in.. We then removed crank shaft.
Crank case had some oil sludge in it and part of the screen was covered in oil sludge. Screen had a few holes in it.
Removed oil pump cover plate. No visible defects with oil pump parts.
Now considering how to proceed.
Mark Harrington
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