Hi all i got a knocking noise in my trk its a 2000 f150 with a 4.6 so i went and replaced the rod bearings and the noise is still there so my other mechanic freind came over and he said its deffinatly not a engine noise so im thinking i had the tranny rebuilt by a ford mec last year so do you think its the fly wheel the engine idles with no knock but when you hit the throttle it will knock and it sounds like a engine bearing ??? what the heck hahahah