Doing a little math here, if the feed from ign switch is 12.6 from a full charge battery and primary resistance is 3.4 ohms the current draw through coil should be 3.7 amps. When running with full charging voltage of 14.6 the current draw should be 4.29 amps provided primary resistance remained the same. Doesn't seem like too high a current draw to heat the coil unless like previously stated, dwell is too great. Unfortunately, not much you can do about dwell except changing to a different electronic unit. A standard ballast resistor would, in my opinion, increase resistance too much causing weak spark, but if I had one laying around I would sure try it just to see what happens. Easy enough to check to see if you have good hot spark with resistor added and running it to see if coil gets hot and engine performs. One thing for sure, I would not just put on another identical coil.
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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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