Cam Phaser Problems
I have been reading a lot of threads on this web site looking for answers to the problems I have been having with my F150.
I have owned my 2007 F150 with a 3V 5.4 for two years. About 6 months ago I started to notice a knocking sound from the engine at 900-1500 RPMs. The sound continued to get worse over time. I took the truck in two weeks ago at 59,000 miles and Ford replaced the cam phasers, lash adjusters, valve covers, some lifters, and a few other parts. I just got my truck back and it still has a knocking sound at 900 RPMs and now rattles for a few minutes on cold start up. I have also noticed a power loss from before I brought the truck in. Does anybody have any experience with this?
I took the truck back to the dealership and they listened to the engine which is making the exact same knocking/tapping sound at low RPM as it was before the repairs, and they told me it is normal for these engines. I have listened to my friends trucks and none of them make a knocking/tapping sound.
Last edited by sniswned; 03-19-2011 at 07:28 AM.