Quote:
Originally Posted by MyFirstZ
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
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Quote:
Originally Posted by sweetbmxrider
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!
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Quote:
Originally Posted by unstable bob gable
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.
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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.