I have a 1983 3.0 I/O with upgrade electronic distributor, about a year or so back I had an loss of spark issue and found the coil was bad. Replaced the coil with a non resisted coil as recommended and everything worked great. The last outing everything worked great after some difficulty getting the boat started. The hard to start issue was I thought I had flooded it. After about a three hour ride the motor began to stumble then after a short while it stalled and could not get it restarted so we came in on the kicker motor. Next day I checked all the wiring, cap, rotor, everything looked great, turned the key and the motor started right up fine. Again after a couple hour ride the stumble came back with eventual stalling. We sat for about an hour letting things cool off then it restarted and ran perfect for the 3/4 hour ride back to the dock. It appears to be the coil again as it was quite hot when the engine stalled. Going thru two coils in a short time makes me wonder if I am overlooking something else. Any suggestions as to what to look for would be greatly appreciated. Just for the record all plug wires, plugs, cap, rotor etc are replaced yearly or two years at best if signs of wear are present. No water in gas, all filters are new this season.
