I still think the lowered oil pressure is a symptom, not a cause. Its the natural result of running at a lower RPM. In post #6, the OP says:
Quote:
Originally Posted by Yankee30
... Everything seems totally normal except when under load in forward it only wants to rev so far before bogging and holding steady at like 25-30psi Oil Pressure. Oil PSI is 40 in normal sounding idle and astern. ...
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The difference between fwd and neutral or reverse seems to be the defining symptom, which to me suggests the reversing gear. A fouled prop would affect both fwd
and reverse, but not neutral. A problem in the oil pump system would affect all three.
I recall some posts here in another thread some time ago about the retaining clip on the adjusting nut on the reverse band being broken or missing, allowing the nut adjustment to change.
It would be really informative to have RPM and oil pressure measurements in the following combinations:
Throttle at idle, shifter in fwd, neutral, reverse
Throttle at cruise setting, shifter in fwd, neutral, reverse.