i have a 2001 f150 with the 5.4 got the truck with blown engine truck came with donor engine the timing gear broke off the cam on the donor engine guy installed new cam and timing gears along with guides and tensioners guy clammed truck had a little skip figured it was a coil pack or injector got truck and its more like a gallop was able to unplug three coil packs and injectors at same time on passenger side and didnt make a difference but did it to the driver side and it made a difference could it be he has that side out of time?