Your right. I bet the engine blew up!!!barely discolored plugs after use might not be a good thing. clean plugs could be a sign of an engine running lean/hot or coolant getting into cylinder and steam cleaning the plugs.
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Your right. I bet the engine blew up!!!barely discolored plugs after use might not be a good thing. clean plugs could be a sign of an engine running lean/hot or coolant getting into cylinder and steam cleaning the plugs.