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Atomic 4 Quits
From your description you sound like you have all the "bases covered". I''d also suspect the coil (as you do) and would do a trial mounting of the coil on a bulkhead, etc. ... AWAY from the engine heat. Just because you replaced one coil does not mean that the replacement coil is any better !!!! If the system fails again I would do a complete primary and secondary ignition circuit analysis ... ***at the exact time of failure*** and not waiting until the engine cools down, etc. If you have the values of resistance, etc. beforehand you will have values to check and COMPARE immediately after the failure. (I''d also check the ground circuit from the engine to the battery for corrosion, high resistance, etc.)
You might also want to join and pose your question to the "Atomic-4 discussion group" here on Sailnet. Your described ''problem'' has been discussed there in great detail many times in the past.
hope this helps.
:-)
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