spark plugsBikesWhere Did Spark-Plug Wires, Caps, Coils, And Distributors Go?Why have motorcycle manufacturers turned to coil-on plug or “stick” coils?By Kevin CameronSeptember 12, 2019BikesWhy Is A Single Spark Plug Centered In A Combustion Chamber?More on the subject of four valves, spark-plug location, and the way things used to beBy Kevin CameronSeptember 28, 2018BikesMore Than You Ever Wanted To Know About Spark PlugsThis $2 part encompasses all the technology of more than a century of internal-combustion-engine developmentBy Steve AndersonJune 15, 2018Ask KevinHow Do You Read A Motorcycle Spark Plug?Cycle World Technical Editor Kevin Cameron answers your motorcycle engineering and mechanical questionsBy Kevin CameronOctober 30, 2017
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