2004 Ford F-250 F250 bottom end noise

2004 FORD F-250
68,000 MILES • V8 • 4WD • AUTOMATIC
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BREMERVALE
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The day after having my truck serviced, I noticed a knocking noise whilst the truck was idling. When you accelerate to 1000 revs the knock goes, when returning to idle you get a loud growl.Besides that the motor still runs perfectly. Would appreciate any help as the local mechanics don't have a clue !

Thanks
Mike
Oct 10, 2010 at 11:28 PM
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TECH1FORD
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Did they put the right of amount of oil in it. Second if it is a 4.6 or 5.4 some aftermarket oil filter companies filters are really junk and they are too restrictive they did it to help with knock that the motors got first thing start up try replacing the filter with a better or diffrent one. Fram or Ford.
Oct 12, 2010 at 11:21 PM