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Old 12-08-2018, 07:37 PM   #24
B4C
 
Join Date: May 2007
Location: Jim Thorpe PA
Posts: 2,130
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Quote:
Originally Posted by MyFirstZ View Post
I'm pretty sure this was a common issue with the 4.6 motors. Not a spark plug being left loose but the plugs blowing out from the head. I had to do a few of the repairs on this at a private shop I worked at
Quote:
Originally Posted by sweetbmxrider View Post
I thought it was the 5.4s with the short threaded plugs because engineers know its best to mix things up when its worked forever Don't forget the ones that did the opposite, you know, stayed stuck in the head!
Quote:
Originally Posted by unstable bob gable View Post
I think the 4.6s have been known to have the spark plugs stay stuck in the head. My one buddy works at a shop that had one that almost needed the head pulled but after major attempts he got it out.
The 4.6 and 5.4 2v trucks seemed to have a huge problem bolwing the plugs and threads out of the head.

The later 5.4 3v used a special spark plug that extended alittle into the chamber and would get loaded up with carbon and stuck into the head.
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