You measure the resistance across the coil primary terminals. If you have 1.6 ohm coil on a 12v system , your coil can overheat and short out internally. It takes a 15 minutes to a half hour to occur and then when it cools, you can start again and the problem reoccurs.
Your plugs don"t look fouled but they look like they"re running cold and/or your mixture is a tad rich but that"s not your basic problem.
Check the coil resistance first. I think you have soe component inthe primary ignition circuit that has a high reisitance in it. When it heats up and the reisitance increase further, you saprk goes to pot. using a jumper wire, jumper around each connectionn in the primary ignition circuit, including the key switch. When the problem goes away, you"ve found the high resistance. You can also do this with a volt meter but you have to do the checks with the engine running. Sometimes you can feel the component. It will be hot to the touch.
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Today's Featured Article - Identifying Tractor Noises - by Curtis Von Fange. Listening To Your Tractor : Part 3 - In this series we are continuing to learn the fine art of listening to our tractor in hopes of keeping it running longer. One particularly important facet is to hear and identify the particular noises that our
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