Question Answered: spark plugs
January 18, 2011, 10:09 PM
It appears that \Ford Engineers picked a two part spark plug for this model.
It seems to have a tendancy for the plug to break off partially if you wait too long to change them.
I was told by a service writer that it is a maintance issue when he showed me the two part spark plug installed by Ford as original equipment. They also advised that it would cost an EXTRA $100.00 per cylinder if they break when they try to remove them.
Seems like this would be a factory defect that no one is paying attention to. They said that they have to crack them then put loosining fluid in the plug hole and let it sit preferably overnight to try and avoid them breaking in the head.
This was also talked about on one of the garage mechanic shows on telivision in the last week or two.