" The engine is a 1976 LM318B
" The engine is a 1976 LM318B it has electronic ignition. After approximately 1.5 hours running at 3200-3400 rpm the engine lost power and would only run below 2400 rpm. The water temp was in the green, the oil pressure and temp where normal, I observed the fuel flow was uninterrupted during the malfunction. Having ample parts aboard - I installed another ignition coil. This fixed the problem for 1 more hour of running and then it did the same thing. I next installed a ballast resistor and it ran fine for the duration of the trip (another 1/2 hr). If the problem is coil overheating, is the ballast resistor the culprit? I have only ever heard of a ballast resistor failing in the start no running mode not the 12 volt all the time mode. Is there other components I should suspect or test? "
" The engine is a 1976 LM318B it has electronic ignition. After approximately 1.5 hours running at 3200-3400 rpm the engine lost power and would only run below 2400 rpm. The water temp was in the green, the oil pressure and temp where normal, I observed the fuel flow was uninterrupted during the malfunction. Having ample parts aboard - I installed another ignition coil. This fixed the problem for 1 more hour of running and then it did the same thing. I next installed a ballast resistor and it ran fine for the duration of the trip (another 1/2 hr). If the problem is coil overheating, is the ballast resistor the culprit? I have only ever heard of a ballast resistor failing in the start no running mode not the 12 volt all the time mode. Is there other components I should suspect or test? "