Quote:
Originally Posted by fastfredracing
I would think a leakdown of that cylinder would be my next step. Aren't those early 4.7 motors famous for dropping the valve seats out of the head ? It is also possible that you have some abnormal cam wear. Easy enough to pull the valve cover, and make sure you are getting full lift .
|
I’m not aware of any valve seat problems with the 4.7 but certainly couldn’t rule that out. I had the heads done when it was rebuilt so I guess it would be prudent to look closely at that. It would be hard to imagine cam wear occurring this quickly but I suppose a failed lifter is a high possibility.
I guess I’ll be removing a valve cover next.