Each magneto fires one plug in each cylinder, so if you have lost both sets of sparks, it may be the ground wires. If you are checking just the exhaust plugs, i.e the 'outer' ones, these all run on one mag. If she was running ok, then lost power and stopped, I would suspect the coils. They can break down when hot. If she stopped suddenly, as if the ignition was switched off, it could be the switch or the leads grounding somewhere. Try swapping the booster lead to the other mag and seeing if it fires, this may indicate a faulty mag.
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05-01-06, 08:52
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