HIGH oil pressure at all times mercruiser 140 1977

bassjbl

Seaman Apprentice
Joined
Jun 7, 2015
Messages
45
The PO said the only issue he knew of the last he ran it was the starter killed out on him, I didn't bother rebuilding since new was only 50$
 

Bt Doctur

Supreme Mariner
Joined
Aug 29, 2004
Messages
19,349
your oil pressure problem is a stuck pressure reliefe valve in the oil pump.oil pump needs to be replaced.
 
Top