Ok I was wondering. On this truck when driving @about 2200rpm's it will get a slight knock nothing on IDLE or high rpm's and the oil pressure gauge goes from pegged to 0 if you shove in the clutch . It has a new oil pump pick up tube and screen. You can rev the engine and no knock either. little puzzled just don't believe it would be bearings(the knock @2200 sounds like a spark knock)1989 ford f150 4.9L oil problems?
the oil pressure drop could be the oil sending unit1989 ford f150 4.9L oil problems?
Worn Rod Bearings sound off when You take foot off gas pedal-Or Diesel
eng;;;;;;;;Worn Main Bearings sound off when You Push Pedal down as in Pulling up a Heel or pulling trailer In other words When under a Load;
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