I have a 1997 F150 that was gifted to me by the in-laws and its been a maintenance beast. It has approximately 125k on it and the check engine light came on. My OBDll reader came back with a misfire in cylinder #1. I removed the spark plug without issue and it was nasty AF. At this point I figured I'd change out the remainder. Everything went smooth until #6 cylinder. I ended up breaking the plug. The entire porcelain portion of the plug came out, but left the threaded bottom that screws into the head. I attempted to use a dye and tap set but I can't get this thing to break at all. I sprayed pb blaster and waited an hour but got no luck with this thing. I'm debating on heating it up with some mapp gas if this does not break up the rust in day.
Anyone have any suggestions?
Anyone have any suggestions?