1993 Ford F150 no oil pressure

1993 FORD F-150
267,000 MILES • V8 • 2WD • AUTOMATIC
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MIKE DOLAN
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I had no oil pressure ,so i put a new oil pump on.The shaft is good tight,pick up tube clean &clear distributor is good.Now i have pressure for about 10 min.and its gone again and motor starts to tap and knock.Please help.
Jan 6, 2009 at 5:16 PM
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RASMATAZ
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Sounds like engine bearings when things starts getting heat up on the crankshaft the bearing clearance increases therefore dropping the oil pressure-could also be the oil pump pressure relief valve sticking.
Jan 6, 2009 at 5:22 PM
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MIKE DOLAN
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[quote:227e528bcd="rasmataz"]Sounds like engine bearings when things starts getting heat up on the crankshaft the bearing clearance increases therefore dropping the oil pressure-could also be the oil pump pressure relief valve sticking.[/quote:227e528bcd]
could the oil go to the heads and not come down for a while and the pickup is sucking air
Jan 6, 2009 at 5:43 PM
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RASMATAZ
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That's if the oil gallieries are clogged-up-Did you actually check the oil pressure with a mechanical gauge?
Jan 7, 2009 at 2:06 PM