changing timing chain
2 Answers
If your timing chain failed there has been damage to the engine internally. One of the best ways to tell is to do a compression test and compare the readings. If the pressures are very low on all cylinders than you have a problem. Timing Chain failures on the 4.6L and 5.4L engines are uncommon. What leads you to believe that?
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How do I know if I put the timing right on my 2008 Ford Expedition