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Old 04-30-2006, 06:20 PM
dnmccy1 dnmccy1 is offline
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Question oil pressure

on my 87 f-150 351 h. o. when istart it up it has 60 psi of oil pressure but after it gets up to operating temp it drops to about 25 psi and sometimes when you pull up to a stop sign it only reads about 10 psi could i have a bad guage or should i replace the oil pump any answers would be appreciated thanks
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Old 04-30-2006, 09:29 PM
fairmontman fairmontman is offline
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I have heard the gauges used in the trucks were not always accurate,you might want to check oil pressure with a mechanical gauge off the engine and see what it is,I had a 78 460 that would read low oil pressure after warmed up, I put a oil pressure gauge on the engine and pressure was within specification.Are their high miles on the engine.
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Old 05-01-2006, 06:07 AM
dnmccy1 dnmccy1 is offline
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i put a new set of guages in it because the factory guages wasn't reading right it's got 166k on it but it had new main bearings and cam in 1999
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Old 05-02-2006, 10:58 PM
fairmontman fairmontman is offline
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Oil pump could be getting weak with that kind of miles
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Old 05-03-2006, 05:37 PM
dnmccy1 dnmccy1 is offline
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i'm going to try and put auto- meter guagues in and get rid of the sun pro ones that are in there and i'm going to run copper line for the oil pressure instead of the nylon tubing.
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Old 05-03-2006, 05:39 PM
dnmccy1 dnmccy1 is offline
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but if that don't work i'm going to put in a new pump


p. s. old fords never die they just go faster!!!
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Old 05-03-2006, 05:39 PM
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