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Troubleshooting
Collapse of the Spark Gap
Spark Leak
Dry Fouling and Wet Fouling of the Plug
Problems with the Firing End
Broken Thread
Breakage of the Insulator
Tear in the Metal Shell Beneath the Hexagonal Portion
Breakage of the Center Electrode Tip
Insulator Spark Leakage (Flashover)
Breakage of the Plug's Ground Electrode
