When the ignition module triggers the coil to spark, the rotor must be lined up exactly with the plug terminal for that cylinder. Mark the locations of the plug wire towers on the body of the distributor with white masking tape so it can be seen with the cap off. With it in neutral, cap removed, coil wire held with a wooden cloths pin such that it will spark to the edge of the distributor, and with a good sight line to the rotor, crank the engine. Watch where the rotor is pointing as the spark snaps. I bet the rotor is incorrectly indexed on the shaft, wrong rotor, or similar issue. If the electronics are located incorrectly in the distributor housing (old breaker plate) the same result happens, the rotor is not pointing to a terminal when it fires. Let us know what you find. Jim
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Today's Featured Article - Talk of the Town: The Saga of Grandpa's Tractor - by The following saga is from the Tractor Talk Discussion Forum. Someone. The saga starts with the following message: Hey guys I have a decision to make. I know what you all will probably suggest and it will probably agree with me way down inside, but here it is. I have a picture blown up and framed in my "tractor room" of a Farmall M. It was my Grandpa's tractor, of which whom I never got to meet. He froze to death getting this tractor out of the barn to pull a truck out of the ditch before I was born. Anyway my dad and aunt had to sell it at the auction,
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