1991 Other Oldsmobile Models re:91 olds 442 oil pressure dro

1991 OLDSMOBILE
13,500 MILES • 4 CYL • FWD • MANUAL
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AMAJORCRUSHERTOO
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  • 7 POSTS
I have a 1991 olds quad 442
the oil pressure drops into the red zone and the over head cam starts makeing all kinds of clicking and nocking noises
it has a 2.3L H.O.
the dip stick reads full of oil
Sep 15, 2008 at 9:31 AM
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MOBILEOILANDMORE
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the oil pump may be bad DO NOT run the car anymore or you will be spending thousands in repairs. if you have to means remove the oil pump and check the flatness of the cover, clearance between outer rotor and housing, inner and outer rotors installed, and clearance between top of rotors and strait edge positioned ontop of the housing, measure thickness of rotors. Check the pressure relief valve as well it could be stuck open. Compare results against specifications from a repair manual if faulty replace. if not there may be a more serious problem. Low oil pressure indicates worn cam, main, and rod bearings.
Jan 7, 2009 at 7:38 PM