Quote:
Quote:
Coil is failing. I've seen it before. The engine starts fine and when the coil reaches a certain temperature the coil stops working.
R.
 and leaving it powered on for 12 hours with no discharging is the reason.
turning the key to "RUN" energizes the coil, leaving it there for 12 hours can ruin a coil. Swap coil and you'll be fine. I've had the same problem with my black '76 Power Wagon years ago. Good luck!
JS
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