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05-10-2013, 03:29 PM
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#1 |
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Registered User
Join Date: Jun 2010
Location: Centerville, MN
Posts: 81
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Oil pressure issue
I have a 4.3 liter that I am having issues with. I have changed the oil to mobile one 10 w30 synthetic oil and running a k&n oil filter the same one for a 350. My issue us when it's cold I have oil pressure about 30 to 35 lbs and when it warms up it is about 20 to 25 pounds. Any ideas what could be wrong and how can I fix this? My other Chevys run between 60 and 80 psi
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05-10-2013, 04:27 PM
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#2 |
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Registered User
Join Date: Jul 2009
Location: washington
Posts: 4,178
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Re: Oil pressure issue
I wouldn't worry. It's still getting decent pressure and flown it looks like
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05-10-2013, 06:44 PM
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#3 |
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Registered User
Join Date: Jun 2010
Location: Centerville, MN
Posts: 81
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Re: Oil pressure issue
Ok, but any idea why the pressure is so low? could it be because the pump has over 200,000 miles on it?
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"Not all those who wander are lost." A.R.R. Tolkien... Some of us are exploring to see what is out there in this world!
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05-10-2013, 06:52 PM
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#4 |
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Registered User
Join Date: May 2012
Location: Ravenswood Wv
Posts: 86
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Re: Oil pressure issue
I'd say its the miles on the pump and bearings. 10 psi for every 1000rpm.
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05-10-2013, 07:42 PM
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#5 | |
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Registered User
Join Date: Jun 2010
Location: Centerville, MN
Posts: 81
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Re: Oil pressure issue
Quote:
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"Not all those who wander are lost." A.R.R. Tolkien... Some of us are exploring to see what is out there in this world!
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05-10-2013, 07:54 PM
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#6 |
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Registered User
Join Date: May 2012
Location: Ravenswood Wv
Posts: 86
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Re: Oil pressure issue
Cam, mains and rods all effect pressure. They loosen up and pressure drops. If your at 20-25 at idle I wouldn't worry a whole lot but if that's all your getting while driving then I would be concerned. If your over 200k then a rebuild would certainly be coming.
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i do my burn outs in 4wd
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05-10-2013, 08:24 PM
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#7 |
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Registered User
Join Date: Jan 2013
Location: Jasper, IN
Posts: 948
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Re: Oil pressure issue
I'd just drive it... As long as it doesn't knock or anything i'd just change the oil every 3k... I pulled mine and put a new pump in and had 40 at idle 65 at 55 mph... 3 weeks later blew though my rod bearings :/
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