i am wondering if anyone has had the same problem that just recently happened to me, if so what was the outcome. i drive a 2003 mustang GT and the other day i was riding along and i heard a noise. a small bang under the hood so i pull over to check it out. upon investagation i discovered that the number six cylinder spark plug had launched out of the head and got stuck in the corresponding coil pack. i thought i might have droped and valve but i pulled the valve cover to check and the valves where fine. i was wondering if anyone has any answers for me before i put my mind to ripping the head off and checking it out. thanks for any information you can give me.