low oil pressure

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low oil pressure

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low oil pressure - 12/3/2007 2:46:15 PM

bmkeiffer

Posts: 9
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Joined: 11/5/2007
Status: offline

I have a 94 150 with the straight 6. Rebuilt the motor and now i have no oil pressure. Thought it was the sending unit replaced it still didn't change so i bought a mechanical gauge and it's only read bout 5-6 psi. already pulled the pump and checked it and ran with out the gauge hooked up and oil came out, put the gauge back on and still 5-6 psi. Is that spot where the sending unit goes even a pressure spot. any feedback would help out.

Post #: 1

RE: low oil pressure - 2/2/2008 7:19:32 PM

sho_ted

Posts: 26
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Joined: 1/20/2008
From: Albany, NY
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sounds like you left out a plug in a oil galley or a mis aligned bearing.

(in reply to bmkeiffer)

Post #: 2

RE: low oil pressure - 4/19/2008 11:07:31 AM

goinstrong

Posts: 894
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Joined: 2/24/2007
Status: offline

Could also be a defective oil pump right out of the box. Look for the loose plug or a block fracture or oil pasage blockage and try pressure testing the pump before you put it in - then you can trace where the pressure is going (if the pump's OK). Never install an oil pump dry - it can burn up by priming it from dry at even low RPM.

(in reply to sho_ted)

Post #: 3