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DT125R FORUM

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Need help

Scheduled Pinned Locked Moved DTR
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  • A Offline
    A Offline
    andrewj1680
    wrote on last edited by
    #5

    Lights and everything are working fine battery is good and is charged, running on super unleaded so good quality fuel too there is no leaks from anywhere there is no tell tale signs at all

    1 Reply Last reply
    0
    • J Offline
      J Offline
      Jens Eskildsen
      wrote on last edited by
      #6

      Theres a passage in the carb-bowl for the choke system, it could be plugged with crud.
      People seem to miss this when they clean the carb.

      1 Reply Last reply
      0
      • CalumC Offline
        CalumC Offline
        Calum
        wrote on last edited by
        #7

        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.

        Always Originate, Never Pirate!

        A 1 Reply Last reply
        1
        • 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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          0
          • 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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            0
            • 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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              0
              • 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

                    1 Reply Last reply
                    1
                    • 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
                      0
                      • 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!

                        A 1 Reply Last reply
                        0
                        • 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
                          0
                          • 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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