Spark Plug Basics Harley Ignition & Harley Electrics Discuss Spark Plug Basics in the Harley Tech & Harley How-to forums; Just a quick FYI thing here,to draw attention to a really good (as usual) 2 part article in the July & Aug,'08 issues of AIM explaining exactly what spark-plugs actually ...

[evoKENevo]

Just a quick FYI thing here,to draw attention to a really good (as usual) 2 part article in the July & Aug,'08 issues of AIM explaining exactly what spark-plugs actually DO and/or DON'T DO,etc. Which IMO is one of the most important subjects to understand right from the get-go..yet the most commonly misunderstood.

[JCourneyaP]

Ken.. You need a two part article to tell you a Spark Plug produces a SPARK? Gee and I though I was slow. Just funnin ya. It was a decent article.

Psssss. They Spark and thats what ignites the fuel mix in the cylinder

[evoKENevo]

Ahhh...there you go,JC...finally got it...huh !?!