cam phaser

Found this online: Can't help you much other than to chime in with a bit of info on my story. Traded my '00 F-250 in for my '09 F-150 (4.6-3V) about a month ago. Less than 2 days after I took delivery, engine started in with a knock at idle. Camp phaser was bad. The dealer obviously wanted to make things right, but it took 6 days to diagnose the problem, order the part, and install. Dealer told me they actually had to get special permission from the home office to unbutton the motor and work on the parts vs pulling the cab and replacing the engine with a new crate motor(not sure I'm total believing that part of the story). Bottom line: I understand the theory behind how the cam timing is varied using a solenoid, electronic controls and hydraulic pressure, but it must be purty involved to troubleshoot and repair the system. I'm guessing unless you're a Class 1-A shadetree mechanic with lots of factory training/knowledge, I'd leave it to the dealer. -------------------------------------------------------------------------------- In case you still want to look and touch, it's located under the valve covers on the front of the cam journals. Shouldn't have to take off a lot of hardware to access (valve covers, fuel rails, some of the belt drive accessories, a few other bits of hardware, but not the intake manifold). Good luck!