CM-020123 Spark Plug Indexing


This course describes the operation of spark plugs and the importance of using properly indexed plugs.


  1. Gene Keys

    didnt know this

  2. Matthew Rader

    good video

  3. Matthew Rader

    did not know this before watching

  4. jon ludwig

    Very good description. I raced Go Karts and we did index spark plugs. We had an assortment of copper gaskets. We marked the top of the plug as to where the ground electrode was and set it towards the exhaust port. It did make a slight difference in performance.

  5. Jason Roby

    Well done. To the point, easy to understand.

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