I have a 2002 Ford Explorer with 70k miles and a 4.6 litre engine. A month ago one of the rear plugs exploded out of the head. The mechanic told me that this is common on the 4.6 Litre and the 5.0 litre V-8 and has been going on for years. Apparently the heads which are aluminum allow the factory installed spark plugs to loosen over time, and wham, they blow out of the cylinder. The mechanic "resleeved" the cylinder, replaced the coil pack, and I had a $350 bill...............Guess what, it happened again last night to another cylinder. Yes, I know, I will change plugs and re-torque to factory specs. Being that this is a common problem on so many Ford products, has anyone taken FORD to task??? Thanks for any help you can give.
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