Some of the new generation JD gas engines recommended a special spark plug with an internal spark gap to lessen plug fouling. You could identify those plugs by the tiny vent hole in the metal top terminal that vented gasses formed in the internal spark gap.
A spark plug company called Aldor, takes that a bit further. Their plugs also have the internal spark gap inside the insulator, that has some sort or thermal widget that opens the internal gap when the plug is cold, then slowly closes it as the plug heats up. They claim to fire in conditions that badly foul ordinary plugs.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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