93 IDI low oil pressure - Ford Powerstroke Diesel Forum
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Old 01-26-2011, 07:34 AM
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93 IDI low oil pressure

Hi guys I have been helping my father in law with his 93 7.3 IdI work truck to make a long story short we discovered oil shavings in the oil pan removed the pan and replaced rod and main bearings the crank looked fine we also installed a new oil pump. We fired the truck up yesterday and it has very low oil pressure at all RPMS my question is is there a oil pressure relief valve somewhere that could be messed up causing this problem if so where is it at and how do we check it to see if it is functioning properly. Thanks

PS we are measuring oil pressure with an actual guage not the idot light.
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Old 01-26-2011, 03:17 PM
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Anyone got any ideas?
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Old 01-27-2011, 07:59 AM
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Most relief valves are on the pump, since you replaced that I wouldnt suspect it. I would how ever suspect maybe the cam bearings, or a worn crank. Did you check the tolerances on the rods and mains?
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Old 01-27-2011, 09:57 AM
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As far as the crank goes it was in pretty good shape I know he (my father in law) checked the tolerences I think the low oil pressure is what caused this whole mess in the first place we are now taking the oil cooler off to see if its plugged or something that would cause the low oil pressure its quite frustrating.
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Old 01-28-2011, 12:05 PM
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Ok let us know.
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Old 03-01-2011, 07:58 AM
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any info yet?
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