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Nov 16, 2003 | 05:21 PM

WALJON

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Joined: Nov 2003

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From: THUNDER BAY

Help

CAN YOU HELP!!! 91 F 250 had 351W put rebuilt 351W from 73 galaxy lotsa mesin around its in runs no oil pressure IS THERE A DIF. IN OIL PUMP SHAFTS????? I put all EFI parts back on.

Dec 31, 2003 | 11:29 PM

87 xlt lariat

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Joined: Nov 2003

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From: waynesburg,pa

should not be any difference in shafts.if oil pump was taken out or taken apart it may have lost it's prime. causing an air pocket in pump. as a result low or no oil pressure.

Jan 1, 2004 | 07:56 AM

RTM

Cargo Master

Joined: Dec 2003

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From: Sunny Florida

Are you getting oil at the rocker arms?

Jan 1, 2004 | 08:11 AM

Slade901

Senior User

Joined: Dec 2003

Posts: 354

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From: Memphis, TN USA

Do you hear a knocking noise?

If you don't hear a knocking noise then it could be just the oil pressure switch or the oil pressure gauge not working.

Get an electric type oil pressure gauge (it's easier than the mechnical because you are not using that tiny hose that might break). If the electric type oil pressure gauge shows fairly good pressure then it is just your oil sensor or your oil sensor gauge.