How To Read a Spark Plug Follow Up - Harley and GMC 6 Inline - Kevin Baxter - Pro Twin Performance

This is a follow up video to the previously loaded "How to Read a Spark Plug Like a Pro". See the concept in action. If you'd like to support the channel thru membership and take advantage of special features, click here to find out how.
https://www.youtube.com/channel/UC8vzPlQOWP9csxUOoyC9Mtw/join