This is a situation where buying the parts and giving them to shop was a terrible idea. Sure you didn't pay a couple hundred in shop markup but if they had picked and bought the parts this issue would be on the original shop that did the timing chain.
But now it's complicated. I agree that crap parts and perhaps an incompetent shop and now a Ford dealer service department that doesn't want to do any real diag is 100% at fault here.
But now it's complicated. I agree that crap parts and perhaps an incompetent shop and now a Ford dealer service department that doesn't want to do any real diag is 100% at fault here.