Oil Pressure

Chevy Forum Chevy Classifieds Photo Gallery Chevrolet News Search Contact CF Sponsors
Member List Forum FAQ Chevy Timeslips Chevy Recalls TSBs Calendars Register Login

Oil Pressure

Printable Version

Chevrolet Forum >> Chevy Trucks, Vans & SUV's >> Tahoe >> Oil Pressure

Page: [1]

Message

<< Older Topic Newer Topic >>

Oil Pressure - 5/22/2008 9:49:56 AM

spanky

Posts: 4
Joined: 5/22/2008
Status: offline

My oil pressure gauge is reading in between o and 20. obviously this is not right but is getting worse and worse. My mechanic said a while back that thicker oil is necessary with older vehicles. I tried that and it worked for some time. But now just lately when i start it up it makes a knocking sound. Any advice? thanks.

Post #: 1

RE: Oil Pressure - 5/22/2008 9:58:36 AM

V70tdi

Posts: 11
Joined: 5/4/2008
Status: offline

The first thing i think about when i read your tread is thet you have some bearrings wearn out. Or if the oil pump has a pressure valve that has get stucked in open position.

(in reply to spanky)

Post #: 2

RE: Oil Pressure - 5/22/2008 10:10:44 AM

spanky

Posts: 4
Joined: 5/22/2008
Status: offline

it doesnt knock when i start going. only when i start it up and a little bit when stopped.

(in reply to V70tdi)

Post #: 3

RE: Oil Pressure - 5/22/2008 9:18:24 PM

73shark

Posts: 2313
Joined: 4/17/2006
Status: offline

Need to verify the gauge reading by temporarily adding a mechanical gauge. Is that the pressure at idle? Does it go up to about 40 psi at normal speeds?

Is it a hard knock or more like a ticking like a sticky lifter makes?

_____________________________

GM perf. exh, GM CAI, Superchips, Lund step tubes, billet grill, LED tails, Lloyd mats, rear console, GM flaps, silver calipers, black bow ties, tint

(in reply to spanky)

Post #: 4

RE: Oil Pressure - 5/23/2008 10:25:41 AM

spanky

Posts: 4
Joined: 5/22/2008
Status: offline

i brought it to the mechanic and he said it sounds like bad crankshaft bearings. So it looks like ill be selling it. Want it? Make an offer.

(in reply to 73shark)

Post #: 5

RE: Oil Pressure - 5/23/2008 8:09:40 PM

RonH

Posts: 422
Joined: 1/31/2007
Status: offline

I had a car that was diagnosed with the same thing because of low oil pressure. Turns out it was only a stopped up oil pickup in the crankcase.