1988 Chevy Celebrity Oiling system

ERNEST HARMON

MEMBER
1988 CHEVROLET CELEBRITY
4 CYL
FWD
AUTOMATIC
130,000 MILES

I have an oil pressure problem at idle.I thought it may have been sludged up. Pulled the oil pan and it was clean. However there was a rubber or neoprene "skirt" that goes around the oil filter casing inside the oil pan. It no longer fits as it should will the system work right without it?I am thinking it gets really soft when the oil gets to operating temperature and is getting sucked up against the pick up screen for the oil pump as I have already replaced the oil pressure sending unit and this did not help.

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

. However there was a rubber or neoprene "skirt" that goes around the oil filter casing inside the oil pan. It no longer fits as it should will the system work right without it-Try replacing it and see what happens

Causes of Low Oil Pressure

Possible causes include:

Excessive main and rod bearing clearances (someone may have installed the wrong-sized bearings or standard-sized bearings on a reground crankshaft). Only 0.001" of extra clearance in the main bearings can reduce oil pressure by up to 20%!

Excessive camshaft bearing clearances (a bearing may have slipped out of place when the cam was installed).

Excessive clearances inside the oil pump.

Leaks between the oil pump and engine.

Oil pump relief valve stuck open or installed backward.

A loose or mispositioned oil pickup tube (too high in the oil pan).

A defective oil pressure sending unit or oil pressure gauge.

Low oil level in the oil pan.

Cracks or leaks in the oil galleries or gallery plugs.

Cracked oil pump housing (improper installation).

Oil viscosity too thin for hot weather.

Oil viscosity too thick for cold weather.