Spark plug flew out!! WTF!!
So I started my 99 Crown VIC PI yesterday, there was a popping sound, smoke and then knocking. (As I later found out the knocking was because...-->) Once I got under the hood, the spark plug was laying on the exhaust manifold and the C.O.P. was broke. The spark plug will not tighten in the hole. What the F**K?!? Surely the threads couldn't just "go bad" all of the sudden. Please help! Thanks.
1999 Ford Crown Vic Police Interceptor 4.6 Liter V8