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SR20DET - Plugs/Gap/Copper/Iridium!
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11-21-2022, 01:17 PM
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jr_ss
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Quote:
Originally Posted by
AKADriver
It's called Corona Stain (seriously) and it's not a problem. It's just caused by static electricity burning up any oil or dirt at the base of the plug wire/coilpack boot.
https://www.youtube.com/watch?v=OvL7oisPn8Q
This post is from 2012…
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