Forum Discussion
keymastr
Jul 05, 2017Explorer
Those 5.4 motors have a fatal flaw in that the timing chain tensioners were faulty and should have been recalled. If you notice any ticking or rattleing, especially when letting off the gas, get them changed immediately. Costs a couple grand to have a shop do it, or a couple hundred in parts if you are real good mechanically. Not for the faint of heart, these motors are not like a small block Chevy. Complicated system.
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