Low Oil Pressure
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Low Oil Pressure
below 950 rpm,s the oil pressure lite comes on ,any ideas of to why ?? cold i have 25 psi of pressure until it warms up and then it is really low.i have about 24 psi going down the road at about 2200 rpm,s i have a mech and electric oil pressure gage,at 750 the oil pressure just seems to go away ??
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Joined: Sep 2002
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From: Northeastern Pa - USA
Kit, the original oil pressure guage is worth about 35 cents. I would first hook up a real manual type guage and see what you are experiencing. the bypass valve in the rear of the oil cooler is sometimes a problem with oil pressure dropping unexpectedly. Be careful not to experience heavy hammering sounds (main bearings). The engines do run with lower than normal oil pressure. I believe they are a high volume type lube system. Get back to us with your findings.
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From: Cleveland/Akron, Ohio
The oil cooler is the tube mounted on the left side of the block. The oil filter screws on to the rear oil cooler "header."
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Is there a way to rebuild the relief valve. On smallblock chevy's we used to drill and tap the hole and put a pipe plug in it, then we just ran the 2 qt filter and watched the guage.
Is there a way to bypass the relief valve or plug it off and run straight pressure from the pump?
Is there a way to bypass the relief valve or plug it off and run straight pressure from the pump?
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Joined: Aug 2003
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From: Cleveland/Akron, Ohio
You should be able to disassemble and clean it and get it working again. Check it for corrosion, mine corroded through and started leaking coolant on the ground.
I might be wrong here, but I think the bypass valve is just designed to bypass the oil filter if it is too dirty and clogged. I wouldn't think that would cause a drop in oil pressure.
I might be wrong here, but I think the bypass valve is just designed to bypass the oil filter if it is too dirty and clogged. I wouldn't think that would cause a drop in oil pressure.
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Joined: Oct 2002
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If it has the typical ford bypass in the filter, wouldn't that take care of excess pressure? If that would be the case, I don't see why you couldn't bypass the relief valve, especially since they seem to have a hard time holding more than 50-60 psi max even when cold.