Trucken Posted March 6, 2016 Report Share Posted March 6, 2016 I repair small equipment for neighbors. Spark has always one of the first things I check, tired of being shocked, so ..this helped a lot. Spark plug wire cut in half inserted into a clear 1/4 inch tube with clearance bout spark plug width. One end moves and if wont spark till almost touching, I know coil is weak. Also use it to identify bad plug wires. Yours for only $19.99 in 10 easy payments. Wait, call NOW and second one FREE. Just pay shipping and handling of $50. Trucken Link to comment Share on other sites More sharing options...
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