Jun/Jul 2008

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SPARK COILS FOR GAS ENGINES

By Charles H. Wendel Atkins

Iowa 52206

Probably the least understood and at the same time the most important function of the gas engine is that of ignition.

The effect of ignition on the working of an engine is remarkable. Nothing tempts an engine man to use a sledge hammer to fix things up permanently any quicker than an engine which will fire occasionally but refuse to run. Almost always this is due to a weak spark, and the weak spark can be due to a number of things. Corroded or dirty igniter points, faulty wiring and connections, weak or partially shorted coil, weak batteries or incorrect timing -- these are some of the common difficulties.

Courtesy of Gerald Jacobson, 212 S. Cedar, Marshfield, Wisconsin 54449

A gas tractor that I built about four years ago. It is a two cylinder LeRoi, 10 hp. The transmission, frame and differential are f...

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