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| | | | Joined: Apr 2009 Posts: 232 Shop Shark | | Shop Shark Joined: Apr 2009 Posts: 232 | On my newly rebuilt 235 the oil pressure guage (original) pegs at idle and high RPM. I haven't scrounged up another guage yet to check against it but I was wondering if there is some kind of relief valve in the pump.The pump is brand new. I'd rather have too much than not enough.I was wondering if it is a relief valve problem could I try using my drill with screwdrier bit in the dizzy hole and run it in reverse to shake things up ? I want to avoid dropping the pan if possible. I'm lucky enough to not have any leaks now so I'm not looking to create any. thanks | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | You need to hook another gauge in the outlet to test it. 40-50 lbs is normal. If you have it in an older chassis that had a splash system they only went to 30 lbs.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Oct 2006 Posts: 111 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2006 Posts: 111 | Your gauge could be bad. Did work before? I would first check the oil line to the gauge because there is no flow through the oil line could be pluged up. | | | | | Joined: Feb 2004 Posts: 29,771 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,771 | Usually, if a pump relief valve is plugged, the engine will load itself down and possibly even stall at idle due to the power consumed by driving the pump. It can also blow out the gasket at the oil filter cover, if the engine is equipped with one. Try plumbing a known good-condition gauge right into the pressure port on the side of the engine. A 0-100 lb. gauge shouldn't peg out if the relief valve is working, and if it does, you definitely need to drop the pan and figure out why the valve is sticking.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
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