Mine is a 2005 F150 5.4 and has had a tic or tap noise for 50,000 miles now and it's had a tuneup, cam position sensors changed along with a few other things but I came to the conclusion of drive it for another 50,000 (that will put me at 200,000 miles) and then trade it in.... it's been a good truck and every mechanic says run it till it breaks because it's nothing major..... we shall see.
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