Thread: spark plug caps
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Old 02-23-2020, 09:14 AM   #52
Roxo
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Location: Kankakee, Illinois
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Default Re: spark plug caps

Quote:
Originally Posted by daren007 View Post
Are you somehow defeating the reason there are ribs on the porcelain by installing the caps over them?
Spark plug construction
Ribs: The ribs prevent electrical energy from leaking from the terminal to the metal case along the side of the insulator. The longer the current has to travel because of the ripples the higher the resistance thereby assisting with isolation.
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