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  1. M

    Unreliable spark Tohatsu MFS6C

    I finally received the new igniter, and measured the various resistance values. The readings of the new igniter are similar to the original igniter: neither are a complete match to the table in the service manual. (I tried both an analog multimeter and a digital multimeter). Obviously, I was...
  2. M

    Unreliable spark Tohatsu MFS6C

    Thanks! Yes, I did replace the plug early on; sorry I should have mentioned that fact in my post.
  3. M

    Unreliable spark Tohatsu MFS6C

    I measured resistance values of the igniter and compared them to the table in the service manual. The measurements in range were between the plug wire and ground, and also the “resistance cap” measurement. Any of the measurements involving the stop terminal or led terminal (oil pressure), were...
  4. M

    Unreliable spark Tohatsu MFS6C

    Thank you. I actually just downloaded the service manual for this engine, and it does include a table of resistance values for the igniter connections. I will check the readings tomorrow and post the results.
  5. M

    Unreliable spark Tohatsu MFS6C

    Thank you for the response. This version of the igniter only has two quick disconnect terminals and the sparkplug wire. To be sure, I removed both the kill switch wire and the wire feeding the oil pressure light…still no spark. Thank you for your quick response! This version of the igniter only...
  6. M

    Unreliable spark Tohatsu MFS6C

    Tohatsu MFS6C (2012) has been unreliable. Have run it half throttle, under load, for 45 minutes at a time with no problem. Shut it off, and restarts…wait for over an hour and restarts. Come back to the boat the next day and it either starts right up, or may refuse to start no matter what is...
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