Thats the same as the old farmers trick (when plugs are fouling) of pulling the plug wire off but leaving it maybe 1/4 away from the plug end. When the coil stores energy its X joules finite amount which gets expended in the form of Volts x Amps x Time when the plug fires. THEREFORE if the voltage is increased (wider gap) the current or arc duration is less, thats why the spark will change from a thick blue to a faint thin wimpy yellow. The wider gap causes the coil voltage to have to rise higher perhaps causing it to run tad hotter, work harder, and maybe at less efficieny overall but it can cause a fouling plug to start firing again. Looks to me like its a choice between changing plugs or curing the fouling (rings, valve guides etc) or running a wider gap (may or may not reduce coil life) ???
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Today's Featured Article - Case Farm Equipment - by Jeremy Sweeten. My name is Jeremy Sweeten and I am currently a junior at Purdue University. I am takin a dual major in Agriculture Systems Management and Agronomy. I am from North Central Indiana, Miami County to be exact. My dad teaches for Marion Community School Systems an outdoor lab called Asherwood. We live there to manage the place. They just happen to have a Case 311 with a Triple Range transmission. I grew up mowing, pushing snow, and hauling maple sap with it. In 1986 my parents bought an old,
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