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Red spark plug ceramic

Discussion in 'XJ Technical Chat' started by fishinchickens, Jun 26, 2014.

  1. fishinchickens

    fishinchickens Member

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    Wanted to see if anyone here has ever seen this before. The bike is running great, no problems at all. I pulled the plugs to check them today and noticed the red on the ceramic. I have been running mid grade and have been primarily using marathon gas. Any ideas on what causes this?
     

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    fishinchickens, Jun 26, 2014
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  2. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    What plug is that? Some additives can glaze to a red color when the spark plug is of too hot a heat range. Some additives have a red/ pink deposit to them even when everything in the combustion chamber is correct.
     
    k-moe, Jun 27, 2014
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  3. fishinchickens

    fishinchickens Member

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    That is an NGK BP7ES. Do you think the plug looks good color wise other than the red?
     
    fishinchickens, Jun 27, 2014
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