Violjohn78,

I know the joy / pain of spark plugs. When replacing them a couple of years ago, the back right plug snapped completely of flush at the threads. Another one snapped of mid way.

Had to pull the head and use a drill and torch to get the broken plugs out as they were so rusted in. It turns out the truck must have been used as a plow truck and the head had all kinds of sand packed in and around the plugs when eventually rusted them in.

Glad that's over with...