Home › Forums › Tech Talk › Denso Iridium Spark Plug gap size?
This topic contains 1 reply, has 2 voices, and was last updated by Steen Carstensen 8 months ago.
hello karter”s. Im running a 2013 rotax sr motor wondering whats the optimum spark plug gap. The spark plug is a Denso Iridium IW29. The weather in mostly in the high 80’s and higher in south fl.
It should be between 0.018″-0.025″. You will have to experiment what works best for your engine and the weather conditions for that particular day.
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