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  1. C

    Intermittent Spark 1972 Mercury 402 40hp

    I am not sure what is exactly wrong with the motor. I have replaced the starter, starter solenoid, kill switch, ignition switch, spark plugs, and spark plug wires. It has an intermittent spark. Sometimes I have no spark sometimes I do. I have unhooked the rectifier and tried to start it and same...
  2. C

    Intermittent Spark 1972 Mercury 402 40hp

    I am not sure what is exactly wrong with the motor. I have replaced the starter, starter solenoid, kill switch, ignition switch, spark plugs, and spark plug wires. It has an intermittent spark. Sometimes I have no spark sometimes I do. I have unhooked the rectifier and tried to start it and same...
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