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Distributor trigger testing.

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  • Distributor trigger testing.

    I've got what I believe is a 1976 115 Mariner with a distributor trigger ignition. Is there a way to test the trigger using a multimeter? Suddenly lost all spark, I found how to test the ignition control box, and it shows to be good. I have power to the control box (red and white wires). Thanks

  • #2
    CDI electronics has a trouble shooting guide. If your motor is listed then it should provide testing instructions for all your ignition parts.

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    • #3
      Sorry but no tests with a multimeter...
      When in doubt,Trim it out!!!
      Business Owner & Certifed Technician
      Boats I own & use
      20ft Javlin w/250 Junkrude
      17ft Bullet w/200 Merc (SOLD!!)
      13ft Allison w/150 I-6
      17ft Hydra-Sport 175GT
      15ft Allison w/75 Stinger(project)
      14 x 48 Drifter with 1100SS Merc

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      • #4
        Thanks for the replies guys. After I posted my question I did so more checking. While the white wire on the ignition box shows power with the key "on" (with a test light), when the engine cranks the light goes out, leading me to think I may have an ignition switch issue. The throttle/shifter control is an old Merc, and is pretty bad worn and full of corrosion, including the switch and wiring.

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        • #5
          hi.
          can you share any info how did you test CDI box in this motor.
          i have the same problem,( motor is mercury 50, 4 cyl, distributor coil drive by belt) spark sometimes showns and gone.

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          • #6
            Need to start you own thread racze..but your box has no power to it, it all generated in distributer.
            When in doubt,Trim it out!!!
            Business Owner & Certifed Technician
            Boats I own & use
            20ft Javlin w/250 Junkrude
            17ft Bullet w/200 Merc (SOLD!!)
            13ft Allison w/150 I-6
            17ft Hydra-Sport 175GT
            15ft Allison w/75 Stinger(project)
            14 x 48 Drifter with 1100SS Merc

            Comment


            • #7
              Sign up today
              The CDI electronics web site is the source of the test. Look for the right ignition system test for your motor.

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