hey guys quick question. My dads 2006 f150 with the 5.4 just blew a spark plug out of the head half way through kentucky. I thought the 2004 and later trucks only had problems with getting the plugs out, not keeping them in. Should I be worried about my 06 or is this an isolated problem. I've always worried about my 2000, but, knock on wood, after 150000 no problems yet. My dad's 01 blew a plug out last year which was the main reason for the new truck. I havn't talked to him yet, but I bet he's thrilled.

 

I would say an isolated incident, and sorry for the bad luck. Anytime threaded aluminum is involved, there is always a chance for failure. I would say the plug was overtightened at the factory or the threads were damaged somehow.

 

it was probably the same idiot that puts on the oil filters at the factory

 

 

First time I've heard that about the 2004+ F-150s. I'd say its an isolated issue.