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cdi dodgy

Scheduled Pinned Locked Moved DTR
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  • W Offline
    W Offline
    watersbarry20
    wrote on last edited by watersbarry20
    #1

    https://www.youtube.com/shorts/-_vfv6-V8CM?feature=share...........
    so there's a link there to a video of my dtr she starts but sounds like the spark is out of time but bike has had a full diagnostic and coil plug everything is all new and fine..starting to think its the cdi now coz bike has been spot on foir 2 years but when i put some throttle on now its not sparking at right time and making it back fire has anyone els had a cdi thats sparked but still been been broken its had new crank seals and collar and battery basically everything is new..can a cdi still have a spark but still be fcuked?

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    • W watersbarry20

      https://www.youtube.com/shorts/-_vfv6-V8CM?feature=share...........
      so there's a link there to a video of my dtr she starts but sounds like the spark is out of time but bike has had a full diagnostic and coil plug everything is all new and fine..starting to think its the cdi now coz bike has been spot on foir 2 years but when i put some throttle on now its not sparking at right time and making it back fire has anyone els had a cdi thats sparked but still been been broken its had new crank seals and collar and battery basically everything is new..can a cdi still have a spark but still be fcuked?

      S Offline
      S Offline
      SpookDog
      wrote on last edited by
      #2

      @watersbarry20

      You been through the carb at all? I’ve had similar running with water in the carb.
      What condition is the plug in after running?
      Is the exhaust manifold gasket tight? No oily mess around it?
      Is the radiator level good? No loss?

      I’ve had slight missing at low revs due to a CDI. It started, ticked over and ran. Just not right. It’s rare though, they usually fail. Could be the stator as well, even the magnetic pickup.
      What year is your bike?

      Sorry I’m a bit disjointed with my questions. My mind runs 20 to the dozen sometimes 🙂 …

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      • W Offline
        W Offline
        watersbarry20
        wrote on last edited by watersbarry20
        #3

        so we have had the stator off and it has been tested has a new coil and has been tried with a coil off a running dtr the crank seal is new the collar is new compression 128psi water top end gasket fine pressure in radiator fine..we did get it sorted other day then after 4 days i went to take it out and back to as it was ..gonna do carb agin today but i know im just second guessing my self coz it was re jetted by shop and i cleaned it a month ago and bike hasnt been anywhere since then ...gonna try my mates cdi on it tomorrow if mine works fine on his bike i know that's not the problem timing is spot on as well has 3 new plugs to make sure they look totally fine

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        • W watersbarry20

          so we have had the stator off and it has been tested has a new coil and has been tried with a coil off a running dtr the crank seal is new the collar is new compression 128psi water top end gasket fine pressure in radiator fine..we did get it sorted other day then after 4 days i went to take it out and back to as it was ..gonna do carb agin today but i know im just second guessing my self coz it was re jetted by shop and i cleaned it a month ago and bike hasnt been anywhere since then ...gonna try my mates cdi on it tomorrow if mine works fine on his bike i know that's not the problem timing is spot on as well has 3 new plugs to make sure they look totally fine

          S Offline
          S Offline
          SpookDog
          wrote on last edited by
          #4

          @watersbarry20

          You both got the same year/model CDI units? There are loads of different ones…

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          • MadGyverM Offline
            MadGyverM Offline
            MadGyver
            wrote on last edited by
            #5

            @watersbarry20 That's exactly the sound of my engine running before my electrical system failed at the loom,stator,ht coil
            and continuously fouled spark plugs.

            I need my tools and a pile of junk.....

            S 1 Reply Last reply
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            • MadGyverM MadGyver

              @watersbarry20 That's exactly the sound of my engine running before my electrical system failed at the loom,stator,ht coil
              and continuously fouled spark plugs.

              S Offline
              S Offline
              SpookDog
              wrote on last edited by SpookDog
              #6

              @MadGyver

              Earth the single blue wire on your 3nc CDI unit! Just try it, please bud…
              Also disconnect the black/white stripe kill curcuit wire at the CDI. Just to be sure it’s not interfering…

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              • MadGyverM Offline
                MadGyverM Offline
                MadGyver
                wrote on last edited by
                #7

                @SpookDog Hey bud it was done and tested a long time ago. I haven't updated my thread,I have progress but I need one more thing to clean and provably will post 100 success in fixing.

                I need my tools and a pile of junk.....

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