Bruce Nunnally Posted March 30, 2016 Report Share Posted March 30, 2016 Spark plugs are on of those automotive terms that almost everyone has heard of. But do you REALLY know the ins and outs of what a spark plug is, how it works, how to GAP a spark plug with out damaging it, what the parts of the spark plug are and the vast selection available.For full blog post visit ~ http://humblemechanic.com/?p=6135 Quote Bruce 2016 Cadillac ATS-V gray/black Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
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