03-03-2006, 02:27 AM
I had the same problem on a 1975 20hp mercury, I replaced both coils, not the problem, I replaced the switch box, that was it. you either have a bad coil or a bad switch box. I think I still have the other coils if you want I can give them to you. let me know if you want them. I'm at work until 7 in the morning. later chuck
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