MSD Digital 6AL issues

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  • hot_rod
    Member
    • Jun 2010
    • 99

    #1

    MSD Digital 6AL issues

    I recently was forced to change classes at my local track, they just decided to quit running the Pure Stock Division. But anyway, I put a MSD Digital 6AL on the car. I liked it because it had the built in Soft Touch Rev Limiter. I went out for the first time with it this weekend. I took the car out for hot laps, it made it about half of a lap before the car died. It was limiting the RPM to about 5000 in the corners, I know it is not bouncing off the chip because I turned 6200 on the backstretch. Coming off of turn 4 the car just starting running like crap. We tested everything we could think of at the track. Power was good, ground was good, ignition switch was good. No spark, car would not hit a lick. There is an LED on the top of these things that is supposed to indicate "System Status", well on mine it would be solid on for appx 2 secs, then blink 6 times then go off and never come back on. Anytime the ignition box sees the trigger, it is supposed to light up. I pushed the car off the trailer yesterday morning and hooked everything back up the way that is supposed to, and it fired right up. I jumpered the green/purple connection and was able to get spark all the way to #1 plug.

    Details about the car: Brand new 358 SBC, factory GM 601 heads, Factory Small Cap HEI with everything disconnect and the white/green hooked up the purple/green (respectively).

    My questions are:
    Does anyone know what the LED Code mean?
    How can I test the facotry magnetic pickup coil in the distributor?

    Thanks for the help.
  • Egoracing
    Senior Member
    • May 2007
    • 4852

    #2
    Originally posted by hot_rod View Post
    I recently was forced to change classes at my local track, they just decided to quit running the Pure Stock Division. But anyway, I put a MSD Digital 6AL on the car. I liked it because it had the built in Soft Touch Rev Limiter. I went out for the first time with it this weekend. I took the car out for hot laps, it made it about half of a lap before the car died. It was limiting the RPM to about 5000 in the corners, I know it is not bouncing off the chip because I turned 6200 on the backstretch. Coming off of turn 4 the car just starting running like crap. We tested everything we could think of at the track. Power was good, ground was good, ignition switch was good. No spark, car would not hit a lick. There is an LED on the top of these things that is supposed to indicate "System Status", well on mine it would be solid on for appx 2 secs, then blink 6 times then go off and never come back on. Anytime the ignition box sees the trigger, it is supposed to light up. I pushed the car off the trailer yesterday morning and hooked everything back up the way that is supposed to, and it fired right up. I jumpered the green/purple connection and was able to get spark all the way to #1 plug.

    Details about the car: Brand new 358 SBC, factory GM 601 heads, Factory Small Cap HEI with everything disconnect and the white/green hooked up the purple/green (respectively).

    My questions are:
    Does anyone know what the LED Code mean?
    How can I test the facotry magnetic pickup coil in the distributor?

    Thanks for the help.
    Make sure the ignition switch is in the Off position.
    Remove the coil wire from the distributor cap and put it about 1/2" from a good ground.
    Disconnect the MSD Magnetic Pickup connector from the distributor.
    Turn the ignition to the On. DO NOT CRANK THE ENGINE.
    With a small jumper wire, short the Green and Violet magnetic pickup wires together then pull the jumper off. Each time the short is removed a spark should jump If spark is present, the ignition is working properly.
    If you get a spark like this and not to teh plugs I would look at the pickup in teh distributtor.

    That LED should come on when the power is put to the ignition and then it should flash with each ignition trigger. You can go to MSD's web site and look up trouble shootin information on the ignition and how to test it out.

    Comment

    • hot_rod
      Member
      • Jun 2010
      • 99

      #3
      Originally posted by Egoracing View Post
      Make sure the ignition switch is in the Off position.
      Remove the coil wire from the distributor cap and put it about 1/2" from a good ground.
      Disconnect the MSD Magnetic Pickup connector from the distributor.
      Turn the ignition to the On. DO NOT CRANK THE ENGINE.
      With a small jumper wire, short the Green and Violet magnetic pickup wires together then pull the jumper off. Each time the short is removed a spark should jump If spark is present, the ignition is working properly.
      If you get a spark like this and not to teh plugs I would look at the pickup in teh distributtor.

      That LED should come on when the power is put to the ignition and then it should flash with each ignition trigger. You can go to MSD's web site and look up trouble shootin information on the ignition and how to test it out.


      I talked to MSD Techline this morning, basically he said that what my LED is doing is normal. And that I need to get the car to quit working and jumper the green/purple together to check the MSD components. I am going to try it, hopefully tonight.

      Comment

      • C10
        Senior Member
        • Nov 2008
        • 359

        #4
        Did you happen to wash the car before headding to the track that night? These are NOT potted sealed units and when they get wet they WILL NOT fire.

        Comment

        • hot_rod
          Member
          • Jun 2010
          • 99

          #5
          Originally posted by C10 View Post
          Did you happen to wash the car before headding to the track that night? These are NOT potted sealed units and when they get wet they WILL NOT fire.
          Definitely did not get the box wet. This thing is brand spanking new, for a while I will take it out of the car anytime I need to wash it or think it might get rained on. New toys get babied for a while, haha.

          Comment

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