Which is what Tempest tells you specifically NOT to do in that article (complete with pictures and explanations why).glass bead, 150 grit. regular plug cleaner from AS&S at 80 PSI.
Who would clean a plug and leave grit in the plug? I think they must talk to the dumbest out there.Which is what Tempest tells you specifically NOT to do in that article (complete with pictures and explanations why).