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My 1992 Bronco 5.0 has a faint knock when cold , but it gets worse

(1992 Ford Bronco)
in Ronkonkoma, NY on March 30, 2012
After it warms up the oil pressure drops , and the knocking gets louder . The oil pump in going , but what can the knock be , and what can I do to fix it ? This always happens , it seems fine when cold , though when giving gas at idle the knock will get a little louder , but faint still
Displaying 3 answers & 3 comments
Popular Answer
on April 01, 2012
It's no spring chicken-it's twenty years old.Sounds like the crankshaft and/or connecting rod bearings are shot.Time for an overhaul or another motor.If the car has not seen regular oil changes,this could be accelerated wear due to a clogged screen on the oil pump.
Someone could hook up a gauge to the motor and determine if oil pressure is adequate.
(We had a T-Bird with 5.0 that had this same condition-it will only get louder,and eventually blow up)
on April 01, 2012
I had just brought the bronco , so I'm not sure about oil changes . It seems tight , except for the knock . Oil looks new , so I'm looking for a reman or another 5.0 with low miles to put in , thanks .
on November 08, 2012
i had a 1995 cougar that did the same thing..but only when idled over 2 grand...and i that was due to a spun bearing..if you mud the truck that could be the issue..
on March 30, 2012
yes, i agree
on March 31, 2012
on April 01, 2012
Thanks , I was looking for an answer about the knock though , the oil pump has to go , you're right .
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