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  1. #1
    All hail the Chief! fullboogie's Avatar
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    Good information on reading spark plugs

    For those of you interested in learning how to properly read spark plugs, there is an excellent 4 page article in this month's Car Craft. Definitely worth the $4. It discusses heat ranges, build materials, reading the porcelain for idle, mid range, and WOT, etc.

    For those of you who refuse to even buy a good tach, don't bother


  2. #2
    Heres one of my fovorites with pics.>>> http://www.dansmc.com/spark_plugs/sp...s_catalog.html

  3. #3
    Hydrotherapy's Avatar
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    thats great...should be a sticky

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