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copilot side spark plug front turning black ?

in 912 / 914 Technical Questions 9 years ago
machanic said this is normal being furthest away?

  • Re: copilot side spark plug front turning black ?

    by » 9 years ago

    He's right. A black dry sooty plug can be normal after idling. It can change to other plugs too and not always be the same one. If you want to check your plugs real burn run it up around 3500-4000 rpm for a few minutes and when you pull back the the throttle immediately shut it off. No idle time.

    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell

      
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