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Right-hand cam phaser ticking is very normal - it DOES NOT MEAN YOUR MOTOR IS ABOUT TO GRENADE. I would guess 1 in 3 3v 5.4s is ticking away away with long over 200K miles on them.The tick/rattle is coming from inside the motor.
I figured if I am hearing the timing chain or cam phaser rattle or both it is probably a good thing to fix so it doesn't cause any damage.
Don't you guys agree?