oil pump low pressure

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10-15-2012, 07:41 AM

hellblazer

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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.

10-15-2012, 07:52 AM

Bdub

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I think mine is 40 at idle fully warmed up

10-15-2012, 08:01 AM

05BlackJimmy

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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?

10-15-2012, 08:37 AM

newguy

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

10-15-2012, 09:10 AM

rriddle3

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

10-18-2012, 05:39 PM

hellblazer

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

10-22-2012, 05:19 PM

1sttimejimmyowner

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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; 10-22-2012 at 05:24 PM.