How do you clean your slant six plugs, or do you even clean them at all?

Mike69cuda said
When son was running jet skis a lot years back, we had a little spark plug sand blaster. Worked great. Sandblasted them and then blew them out with compressed air. I forget what the medium was, but it wasn’t sand.

The real issue with those was people would not blow the media out of the plug when finished. JC Whitney used to sell those as I recall.