Originally Posted by pjbonthebeach

I have an'05 Lariat SCrew with the 5.4 with 40,000 miles and have had the noise almost since new. First, I need to let you know that my 'diesel noise' problem occurs at cold startup and continues until the engine reaches temperature. My visits to the dealer have gone as follows:

1. Cannot find an issue.
2. Replace Left cam phaser.
3. Cannot find an issue.
4. Replace Left AND Right cam phasers.
5. Dealer says that I have wrong oil and replaced my new Mobile 1 with stock.

Yep! You guessed it. The noise is still there. The dealer is being very nice about the whole thing but the problem still exists. My first car was a 1967 Ford ranchero with the straight 6 and that thing never missed a beat; even in below zero weather (BTW, I now live in Florida). I was hoping that, somewhere in the subsequent 3 decades, they would have gotten better. The only comfort I have is that all of the "domestics" have multiple issues of one sort or another.