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DT125R FORUM

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Need help

Scheduled Pinned Locked Moved DTR
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  • CalumC Calum

    I'd check the spark plug first.

    If you can get it fired up, but takes a long time, chances are it is the heat in the bote helping it fire up not the lack of fuel.

    Take the plug out and test the spark.

    Heat the plug up and refit it and kick her over, if it starts when the plug is hot but not cold then there is your answer.

    A Offline
    A Offline
    andrewj1680
    wrote on last edited by
    #8

    @calum tried a new plug But still no go once it's warn it's first kick everytime it's just getting it started first thing, choke seems to help so it must be working as it won't even try to start without it

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    • CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #9

      The headgasket isn't blown is it?

      Always Originate, Never Pirate!

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      • A Offline
        A Offline
        andrewj1680
        wrote on last edited by
        #10

        I don't think so it's not getting hot or pressurising or anything

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

          It's possible it could be a weak spark, worn HT leads or coil would do that.

          I'd like to think that if you can get it running fine when it's hot, then it is unlikely to be the fueling system and sounds more like an ignition fault.

          Always Originate, Never Pirate!

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          • DartyD Offline
            DartyD Offline
            Darty
            wrote on last edited by Darty
            #12

            If it's difficult to start on choke, then richen the Pilot circuit then?

            That will determine the fuelling situation.

            A 25 is standard for TM28ss. I use a 27.5 pilot jet at the moment.

            • best to Check the coil out.

            Keep it real

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            • A Offline
              A Offline
              andrewj1680
              wrote on last edited by
              #13

              I'll give it a try I have a spare there that I know is good, thanks lads Much appreciated

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              • A Offline
                A Offline
                andrewj1680
                wrote on last edited by
                #14

                Must of been a carb issue as I fitted a different carb after trying the coil and now it's fine hot or cold

                CalumC 1 Reply Last reply
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                • A andrewj1680

                  Must of been a carb issue as I fitted a different carb after trying the coil and now it's fine hot or cold

                  CalumC Offline
                  CalumC Offline
                  Calum
                  wrote on last edited by
                  #15

                  @andrewj1680 How bizarre, sorry to have led you down the wrong path.

                  That's odd.

                  Always Originate, Never Pirate!

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                  • CalumC Calum

                    @andrewj1680 How bizarre, sorry to have led you down the wrong path.

                    That's odd.

                    A Offline
                    A Offline
                    andrewj1680
                    wrote on last edited by
                    #16

                    @calum not your fault mate it did kind of point that way it was like I had to get the plug warm before it would run right I did swap coil first after first trying it to make sure it wasn't gonna start then I changed coil and still wouldn't run changed the carb and after about 3 kicks it started fine and it rides no issues, tomorrow will tell me properly if the issue is sorted but it's looking like it is

                    CalumC 1 Reply Last reply
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                    • A andrewj1680

                      @calum not your fault mate it did kind of point that way it was like I had to get the plug warm before it would run right I did swap coil first after first trying it to make sure it wasn't gonna start then I changed coil and still wouldn't run changed the carb and after about 3 kicks it started fine and it rides no issues, tomorrow will tell me properly if the issue is sorted but it's looking like it is

                      CalumC Offline
                      CalumC Offline
                      Calum
                      wrote on last edited by
                      #17

                      @andrewj1680 I know it's common fouled plugs on crossers that simply once there is heat in the combustion chamber that it they start.

                      Always Originate, Never Pirate!

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