BasV Posted November 11, 2018 Share Posted November 11, 2018 Changed out my sparkplugs this afternoon and one of them looked a bit burnt on the upper (white) side. Anyone knows if this means anything? Should I be worried? Quote Link to comment Share on other sites More sharing options...
0 noodels Posted November 12, 2018 Share Posted November 12, 2018 Normal Quote Link to comment Share on other sites More sharing options...
0 Gel Posted November 13, 2018 Share Posted November 13, 2018 Don't leave it too long next time.....lol Quote Link to comment Share on other sites More sharing options...
0 noodels Posted November 14, 2018 Share Posted November 14, 2018 Its called Corona on occasions, when a spark plug is removed, a brownish stain that looks like a sign of combustion gas flow can be seen on the insulator just above the caulked portion ofthe metal shell. This discolouration, known as Corona stain, is the result of oil particles suspended in the air adjacent to the plug becoming attached to the surface of the insulator. It does not affect spark plug performance. 1 Quote Link to comment Share on other sites More sharing options...
0 Danoteg Posted January 5, 2019 Share Posted January 5, 2019 That's completely normal. Stick with standard ngk plugs, cheap cheerful work perfect and just change them more often Quote Link to comment Share on other sites More sharing options...
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BasV
Changed out my sparkplugs this afternoon and one of them looked a bit burnt on the upper (white) side. Anyone knows if this means anything? Should I be worried?
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