Reply to "Oil Pressure"

tomsealbeachMember

@John Czarnecki posted:
Oil pressure problem on a 351 Cleveland engine. Oil pressure was running 25 lbs at idle to 70 lbs running. Now it's running 10 lbs at idle to 50 pounds running. Oil level is okay. I replaced the oil pressure sending unit and now the reading is 120 lbs (pegged)???. I replaced the sending unit with a manual gauge on the engine block and verified 10 lbs at idle, 50 lbs at running. I suspect the oil pump failure but, before replacing the pump I'm asking if there is anything else I should check.

I would do an oil change and see if any metal comes out of the pan, maybe drop the pan, if there is silver material in the oil, then you know you have some bearing problems. If its minimal silver material, change the oil and run it, see where your pressure is.

I've put a manual guage on the back of the block on a T fitting so it eliminates the electronic gremlins as a fail safe.

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