Have you guys heard about this? "Some Ford with 5.4 engines may experience difficulty with spark plug removal which may cause damage to the spark plug and leave part of the spark plug in the cylinder head."
This just happened to my buddy on his GT with a 4.6 engine when he tried to change plugs. The ground electrode shield portion is stuck in the cylinder head. The only way to remove it is to use a thread tap being careful to not let any chips fall into the combustion chamber. You need to use a a modified vacuum cap (382444-S) as a stopper-type plug.
I have a 2008 Gt500 with almost 10K miles. Makes me want to pull my plugs and coat the shielded portion with anti-seize compound. But I think I'll just leave it alone. Don't fix it if it ain't broken!
For those interested, here is a link to the removal procedure. (entry #12) http://allfordmustangs.com/forums/2005-2010-mustang-gt-tech/83530-broken-spark-plug.html
This just happened to my buddy on his GT with a 4.6 engine when he tried to change plugs. The ground electrode shield portion is stuck in the cylinder head. The only way to remove it is to use a thread tap being careful to not let any chips fall into the combustion chamber. You need to use a a modified vacuum cap (382444-S) as a stopper-type plug.
I have a 2008 Gt500 with almost 10K miles. Makes me want to pull my plugs and coat the shielded portion with anti-seize compound. But I think I'll just leave it alone. Don't fix it if it ain't broken!
For those interested, here is a link to the removal procedure. (entry #12) http://allfordmustangs.com/forums/2005-2010-mustang-gt-tech/83530-broken-spark-plug.html