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Old 07-31-2002, 06:26 AM
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Default color of plugs
What do brown spark plugs mean? Is rich black or brown?
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Old 07-31-2002, 06:57 AM
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Default Re: color of plugs (Canuk_SiR)
rich is black all around, including the tip of the spark plug. Brown is pretty normal.

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Old 07-31-2002, 07:14 AM
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Default Re: color of plugs (ekb18c)
brown sounds about just right. you want like a tannish lighht brown .
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Old 07-31-2002, 07:35 AM
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Default Re: color of plugs (Canuk_SiR)
Tannish light brown is perfect. The plug can get reddish if you use octane booster in the tank.

An ashy grey (gray) tan is a prefect running plug.

Randy
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