oil pump low pressure

Reply Subscribe

Thread Tools

Search this Thread

Oct 15, 2012 | 07:41 AM

hellblazer

Thread Starter

New Member

Joined: Dec 2010

Posts: 68

hellblazer is an unknown quantity at this point

oil pump low pressure

i wanted to know f anybody knows why the am i getting low pressure reading ob my oil gauge.i just changed the oil sat.and this morning i noticed it being at 35psi.what is normal reading supposed to b.

Oct 15, 2012 | 07:52 AM

Bdub

New Member

Joined: Apr 2009

Posts: 53

I think mine is 40 at idle fully warmed up

Oct 15, 2012 | 08:01 AM

05BlackJimmy

Junior Member

Joined: Nov 2011

Posts: 265

I know the gauge is supposed to be almost at the middle while idling and when accelerating it goes up past the middle. Did you check the oil level?

Oct 15, 2012 | 08:37 AM

newguy

BF Veteran

Joined: Feb 2012

Posts: 4,205

From: Easthampton, ma.

oil does get thinner when warm, which would show less pressure. What weight did you put in?

Oct 15, 2012 | 09:10 AM

rriddle3

BF Guru

Joined: Dec 2006

Posts: 6,594

From: Fort Worth,Texas

Rule of thumb: 10 psi needed for each 1k RPM. GM specs 8psi minimum for our engines.

Oct 18, 2012 | 05:39 PM

hellblazer

Thread Starter

New Member

Joined: Dec 2010

Posts: 68

i use 5w30 high mileage castrol gtx.i guess its normal.thanks eveyone.

Oct 22, 2012 | 05:19 PM

1sttimejimmyowner

Super Member

Joined: Apr 2012

Posts: 1,279

From: Port huron,Mi

1sttimejimmyowner is on a distinguished road

40 psi @ idle after fully warmed is good.

My 4.3 in my truck starts up at 60psi.After it warms up it stays around 30psi at idle.I had a van with the same engine oil pressure was about the same till rod bearing started going bad.

Last edited by 1sttimejimmyowner; Oct 22, 2012 at 05:24 PM.