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  1. #1
    Moderator RX951's Avatar
    Join Date
    Apr 2005
    League City, Texas

    How to Read Spark Plugs

    Here are two good links on how to read spark plugs.

    This website is from NGK

    On this link, click on the plug and it will give you an expanded view of the picture.

    Here is a chart from the TSR software website

  2. #2
    ABBOTT's Avatar
    Join Date
    Jul 2005
    Birmingham, AL / Lay Lake
    very good info Billy!!

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