D21 is a hot plug.Do a compression check,if the engine is pumping oil the plugs will foul often.I alway chuckle when I see clean the rotor and distributor contacts.The spark voltage can jump a 1/2 gap on most tractors when the engine is running.Changing all the ignition parts with out finding the bad part is a waste of money.If the new plugs say made in Mexico on the box you have introduced a new problem to the mix.No amount of ignition tinkering will fix oil fouled plugs.Look up Aldor spark plugs on the web.
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Today's Featured Article - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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