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  4. Ignition Timing Problem - Won't Start

Ignition Timing Problem - Won't Start

Scheduled Pinned Locked Moved Engine
ignition timingignitiondtreno sparktiming
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  • CalumC Offline
    CalumC Offline
    Calum
    wrote on last edited by
    #2

    Most likely it'll be the side stand switch. Immediately when you said spark when you released the starter button that this went through my mind.

    Either the side stand switch has failed, or the neutral switch. Both of which can be looped out of the circuit to remove them as the culprit.

    I doubt the timing is off as it's pretty hard to get wrong. The flywheel has the magneto built in and the pick up is fixed. Only the woodruff key alters the ignition, or aftermarket CDI.

    So I would look at the side stand switch being the problem.

    Failing that, a lose wire in the loom, check ignition barrel loom. or neutral switch.

    Always Originate, Never Pirate!

    2 1 Reply Last reply
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    • CalumC Calum

      Most likely it'll be the side stand switch. Immediately when you said spark when you released the starter button that this went through my mind.

      Either the side stand switch has failed, or the neutral switch. Both of which can be looped out of the circuit to remove them as the culprit.

      I doubt the timing is off as it's pretty hard to get wrong. The flywheel has the magneto built in and the pick up is fixed. Only the woodruff key alters the ignition, or aftermarket CDI.

      So I would look at the side stand switch being the problem.

      Failing that, a lose wire in the loom, check ignition barrel loom. or neutral switch.

      2 Offline
      2 Offline
      2Stroke4Smoke
      wrote on last edited by
      #3

      @calum said in Ignition Timing Problem - Won't Start:

      Most likely it'll be the side stand switch. Immediately when you said spark when you released the starter button that this went through my mind.

      First things first, thank you for the advice 🙂

      I've unplugged both the side stand switch and the neutral switch but still the issue persists, every time I kick it over the lever flies straight back up leaving me with a rather sore foot!

      Interesting what you say about timing as I couldn't see how it could be adjusted besides a programmable cdi but assumed I must be missing something.

      I can't find anything loose in the loom, and I have a good earth on the ignition barrel. I suspect it could be something to do with the stator because as mentioned earlier it blew twice and after having the problem 'fixed' it did run (albeit for about 10 minutes before blowing again) and after having it re-wound for the third time it never ran again. I will probably order one from evilbay and hope I manage to get a functioning unit.

      F 1 Reply Last reply
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      • 2 2Stroke4Smoke

        @calum said in Ignition Timing Problem - Won't Start:

        Most likely it'll be the side stand switch. Immediately when you said spark when you released the starter button that this went through my mind.

        First things first, thank you for the advice 🙂

        I've unplugged both the side stand switch and the neutral switch but still the issue persists, every time I kick it over the lever flies straight back up leaving me with a rather sore foot!

        Interesting what you say about timing as I couldn't see how it could be adjusted besides a programmable cdi but assumed I must be missing something.

        I can't find anything loose in the loom, and I have a good earth on the ignition barrel. I suspect it could be something to do with the stator because as mentioned earlier it blew twice and after having the problem 'fixed' it did run (albeit for about 10 minutes before blowing again) and after having it re-wound for the third time it never ran again. I will probably order one from evilbay and hope I manage to get a functioning unit.

        F Offline
        F Offline
        finnerz89
        wrote on last edited by
        #4

        @2stroke4smoke ermmm unplugging those isn't going to help lol. They need to be in the circuit and 'closed' to give you a spark.

        If you want to run with them unplugged you'll need to link the wires on the loom plug together.

        Current bikes:
        DT125X '07
        Street Triple R '11
        Aprilia ETV1000 '02

        Previous:
        DR650RSE '96
        FJ1200 '92

        2 1 Reply Last reply
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        • F finnerz89

          @2stroke4smoke ermmm unplugging those isn't going to help lol. They need to be in the circuit and 'closed' to give you a spark.

          If you want to run with them unplugged you'll need to link the wires on the loom plug together.

          2 Offline
          2 Offline
          2Stroke4Smoke
          wrote on last edited by
          #5

          @finnerz89 Forgive my lack of knowledge about electrics, I have always considered them some form of witchcraft lol... So to eliminate them as a possible cause what would I need to do?

          CalumC 1 Reply Last reply
          0
          • 2 2Stroke4Smoke

            @finnerz89 Forgive my lack of knowledge about electrics, I have always considered them some form of witchcraft lol... So to eliminate them as a possible cause what would I need to do?

            CalumC Offline
            CalumC Offline
            Calum
            wrote on last edited by
            #6

            @2stroke4smoke Sorry yes, as @finnerz89 says, the system must be looped out.

            The fact that you're getting the same problem with it unplugged, means there has been no change in the system.

            Focus on one item at a time, my money is on the side stand switch. As said, it must be looped out so that the switch is closed.

            Always Originate, Never Pirate!

            2 1 Reply Last reply
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            • CalumC Calum

              @2stroke4smoke Sorry yes, as @finnerz89 says, the system must be looped out.

              The fact that you're getting the same problem with it unplugged, means there has been no change in the system.

              Focus on one item at a time, my money is on the side stand switch. As said, it must be looped out so that the switch is closed.

              2 Offline
              2 Offline
              2Stroke4Smoke
              wrote on last edited by
              #7

              @calum So I looped out both the side stand and neutral switches and somehow was able to just about start it after about 40 kicks, it barely ran though and wouldn't idle or climb past a certain rpm, it also backfired pretty loudly when kicking it over. I've posted a video of it running https://www.youtube.com/watch?v=qUmE7Z2nQy4 - you can see why I think it could be a timing issue now.

              The battery is dead and won't charge so for testing purposes I just bolted the positive and negative leads together to complete the circuit (maybe should have mentioned this earlier) I note however that the headlight did not come on.... could that be causing it to run so poorly?

              CalumC 1 Reply Last reply
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              • 2 2Stroke4Smoke

                @calum So I looped out both the side stand and neutral switches and somehow was able to just about start it after about 40 kicks, it barely ran though and wouldn't idle or climb past a certain rpm, it also backfired pretty loudly when kicking it over. I've posted a video of it running https://www.youtube.com/watch?v=qUmE7Z2nQy4 - you can see why I think it could be a timing issue now.

                The battery is dead and won't charge so for testing purposes I just bolted the positive and negative leads together to complete the circuit (maybe should have mentioned this earlier) I note however that the headlight did not come on.... could that be causing it to run so poorly?

                CalumC Offline
                CalumC Offline
                Calum
                wrote on last edited by Calum
                #8

                @2stroke4smoke Yeah it won't run right if the power is weak. I think you are mistaken this bike for a four stroke. There is no timing. The static angle is fixed on the cdi. The magneto and pick ups are fixed. Provided you have these located on the bike appropriately you shoulkd be laughing.

                Sort the electrics out. You need approx 20'000 volts across the sparkplug to get it running right, it can't be botched.

                Always Originate, Never Pirate!

                2 1 Reply Last reply
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                • O Offline
                  O Offline
                  oldman
                  wrote on last edited by
                  #9

                  Sounds like the carb to me if it's trying to run

                  1 Reply Last reply
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                  • CalumC Calum

                    @2stroke4smoke Yeah it won't run right if the power is weak. I think you are mistaken this bike for a four stroke. There is no timing. The static angle is fixed on the cdi. The magneto and pick ups are fixed. Provided you have these located on the bike appropriately you shoulkd be laughing.

                    Sort the electrics out. You need approx 20'000 volts across the sparkplug to get it running right, it can't be botched.

                    2 Offline
                    2 Offline
                    2Stroke4Smoke
                    wrote on last edited by
                    #10

                    @calum Solved!

                    It was indeed timing related. The two wires leading to the pickup were the wrong way round. I swapped them over and re-soldered into place and voila it fired up first kick and runs as it should and revs freely.

                    Thanks for the help 🙂

                    CalumC 1 Reply Last reply
                    1
                    • 2 2Stroke4Smoke

                      @calum Solved!

                      It was indeed timing related. The two wires leading to the pickup were the wrong way round. I swapped them over and re-soldered into place and voila it fired up first kick and runs as it should and revs freely.

                      Thanks for the help 🙂

                      CalumC Offline
                      CalumC Offline
                      Calum
                      wrote on last edited by
                      #11

                      @2stroke4smoke Glad you solved it.

                      Generally there is no reason to worry about timing on a stock two stroke. Naturally if it's been modified...

                      Always Originate, Never Pirate!

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