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DT125R FORUM

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  3. Bike running fast revs

Bike running fast revs

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  • S scrimsmustang

    Is this reving high as soon as you start it ? Common things that will cause it also are a blown or incorrectly sealed cylinder base gasket or a leaking left crank seal, its usually the left side that goes they dry out and perish over time. Only a couple of quid and easy to fit, same with the base gasket.

    declanD Offline
    declanD Offline
    declan
    wrote on last edited by
    #35

    @scrimsmustang when first started it was perfect but soon as i gave it a nice rev it acted up

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    • O Offline
      O Offline
      oldman
      wrote on last edited by
      #36

      Not trying to teach you to suck eggs but is it possible slide binding on carb interior? Just wondered if that might explain the cable coming adrift also?

      declanD 1 Reply Last reply
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      • O oldman

        Not trying to teach you to suck eggs but is it possible slide binding on carb interior? Just wondered if that might explain the cable coming adrift also?

        declanD Offline
        declanD Offline
        declan
        wrote on last edited by
        #37

        @oldman possibly I just started it up and still the same I did notice the slide was sluggish but it was still coming to rest

        declanD 1 Reply Last reply
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        • declanD declan

          @oldman possibly I just started it up and still the same I did notice the slide was sluggish but it was still coming to rest

          declanD Offline
          declanD Offline
          declan
          wrote on last edited by
          #38

          @declan okay so it’s working now the oil pump had stopped pumping had air in it no idea how but I guess that was my fault i wd40 every cable and after many hours it’s going but the cable keeps slipping out the carb does anyone have a fix for this?

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          • O Offline
            O Offline
            oldman
            wrote on last edited by
            #39

            Something must be missing. Can you post some pics up so I can compare with mine? Is the cable new(ish)?

            declanD 1 Reply Last reply
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            • O oldman

              Something must be missing. Can you post some pics up so I can compare with mine? Is the cable new(ish)?

              declanD Offline
              declanD Offline
              declan
              wrote on last edited by
              #40

              @oldman yes was fitted just before I got the bike and pics I can’t do I don’t have an imgur account yet

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              • F Offline
                F Offline
                finnerz89
                wrote on last edited by
                #41

                On mine there's a little plastic clip that holds the cable into the slide, it's bright green I think - hard to miss lol.
                Or is the cable outer coming loose from the carb top?

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

                Previous:
                DR650RSE '96
                FJ1200 '92

                declanD 1 Reply Last reply
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                • F finnerz89

                  On mine there's a little plastic clip that holds the cable into the slide, it's bright green I think - hard to miss lol.
                  Or is the cable outer coming loose from the carb top?

                  declanD Offline
                  declanD Offline
                  declan
                  wrote on last edited by
                  #42

                  @finnerz89 that green piece is missing then I don’t remember there ever being one

                  declanD 1 Reply Last reply
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                  • declanD declan

                    @finnerz89 that green piece is missing then I don’t remember there ever being one

                    declanD Offline
                    declanD Offline
                    declan
                    wrote on last edited by
                    #43

                    @declan any chance anyone has a pic of one so I can try make one

                    ricky0115R 1 Reply Last reply
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                    • ricky0115R Offline
                      ricky0115R Offline
                      ricky0115
                      wrote on last edited by
                      #44

                      Mine was doing this, turned out to be a split gasket on the reed block spacer.

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                      • declanD declan

                        @declan any chance anyone has a pic of one so I can try make one

                        ricky0115R Offline
                        ricky0115R Offline
                        ricky0115
                        wrote on last edited by
                        #45

                        @declan you will never make one unless you have a 3D printer, the piece never moves use a small calbe tie it should do the job

                        declanD 1 Reply Last reply
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                        • ricky0115R ricky0115

                          @declan you will never make one unless you have a 3D printer, the piece never moves use a small calbe tie it should do the job

                          declanD Offline
                          declanD Offline
                          declan
                          wrote on last edited by
                          #46

                          @ricky0115 how would I position the tie bud?

                          ricky0115R 1 Reply Last reply
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                          • declanD declan

                            @ricky0115 how would I position the tie bud?

                            ricky0115R Offline
                            ricky0115R Offline
                            ricky0115
                            wrote on last edited by
                            #47

                            @declan https://www.fowlersparts.co.uk/parts/view/3ME-1490J-00

                            That’s really what you need to do it properly they don’t sell it separately.

                            I was joking about the cable tie!

                            declanD 1 Reply Last reply
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                            • ricky0115R ricky0115

                              @declan https://www.fowlersparts.co.uk/parts/view/3ME-1490J-00

                              That’s really what you need to do it properly they don’t sell it separately.

                              I was joking about the cable tie!

                              declanD Offline
                              declanD Offline
                              declan
                              wrote on last edited by
                              #48

                              @ricky0115 your jokes are terrible lol

                              ricky0115R 1 Reply Last reply
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                              • declanD declan

                                @ricky0115 your jokes are terrible lol

                                ricky0115R Offline
                                ricky0115R Offline
                                ricky0115
                                wrote on last edited by
                                #49

                                @declan your not the only person to say that 😂

                                declanD 1 Reply Last reply
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                                • ricky0115R ricky0115

                                  @declan your not the only person to say that 😂

                                  declanD Offline
                                  declanD Offline
                                  declan
                                  wrote on last edited by
                                  #50

                                  @ricky0115 just took the part out it already has a notch built in that stops the cable from sliding out so I’m a little confused as to how it’s actually coming loose I’m gonna try a stiffer spring

                                  S 1 Reply Last reply
                                  0
                                  • declanD declan

                                    @ricky0115 just took the part out it already has a notch built in that stops the cable from sliding out so I’m a little confused as to how it’s actually coming loose I’m gonna try a stiffer spring

                                    S Offline
                                    S Offline
                                    scrimsmustang
                                    wrote on last edited by
                                    #51

                                    @declan

                                    Put 2 springs on

                                    declanD 1 Reply Last reply
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                                    • S scrimsmustang

                                      @declan

                                      Put 2 springs on

                                      declanD Offline
                                      declanD Offline
                                      declan
                                      wrote on last edited by
                                      #52

                                      @scrimsmustang it seems to be sorted now put a stiffer spring in

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