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  4. 3rd piston ring please help

3rd piston ring please help

Scheduled Pinned Locked Moved Engine
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  • C Calum
    19 Jul 2017, 13:50

    Something isn't right if you are losing compression mate.

    Are you sure this is what is happening?

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    declan
    wrote on 19 Jul 2017, 17:21 last edited by
    #6

    @calum not at all I've got it down to either fueling under load or weak spark under load as on the garden it's okay but if I take it out and select 2nd the bike comes to a stop at the end of the gear then after that it starts running weird like a splutter withough the noise if you know what I mean then I have to push it as it won't ride at all but will still run and rev

    Z 1 Reply Last reply 19 Jul 2017, 17:41
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    • D declan
      19 Jul 2017, 17:21

      @calum not at all I've got it down to either fueling under load or weak spark under load as on the garden it's okay but if I take it out and select 2nd the bike comes to a stop at the end of the gear then after that it starts running weird like a splutter withough the noise if you know what I mean then I have to push it as it won't ride at all but will still run and rev

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      Zrako
      wrote on 19 Jul 2017, 17:41 last edited by
      #7

      @declan well , is your clutch set up properly? I mean the tension .

      1979 Jawa Mustang 50
      2003 Gilera DNA 125 R.I.P
      2015 Keeway TX 125 SM
      2006 Yamaha DT 125 X

      C 1 Reply Last reply 19 Jul 2017, 17:45
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      • Z Zrako
        19 Jul 2017, 17:41

        @declan well , is your clutch set up properly? I mean the tension .

        C Offline
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        Calum
        wrote on 19 Jul 2017, 17:45 last edited by
        #8

        @zrako yeah, if it's losing power under load then it sounds like clutch is slipping.

        Always Originate, Never Pirate!

        D 1 Reply Last reply 19 Jul 2017, 18:15
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        • C Calum
          19 Jul 2017, 17:45

          @zrako yeah, if it's losing power under load then it sounds like clutch is slipping.

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          declan
          wrote on 19 Jul 2017, 18:15 last edited by
          #9

          @calum the clutch was in a bad state but since I got a new lever and adjuster it will pop the front wheel up but it's losing the power after initially using the clutch it feels good but after then it's losing power I don't believe it to be the clutch but I really thought it was till I got a new lever the other day before that I could redline drop the clutch and barely move

          Z 1 Reply Last reply 19 Jul 2017, 19:05
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          • D declan
            19 Jul 2017, 18:15

            @calum the clutch was in a bad state but since I got a new lever and adjuster it will pop the front wheel up but it's losing the power after initially using the clutch it feels good but after then it's losing power I don't believe it to be the clutch but I really thought it was till I got a new lever the other day before that I could redline drop the clutch and barely move

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            Zrako
            wrote on 19 Jul 2017, 19:05 last edited by
            #10

            @declan is there plenty of free play on the lever?

            1979 Jawa Mustang 50
            2003 Gilera DNA 125 R.I.P
            2015 Keeway TX 125 SM
            2006 Yamaha DT 125 X

            D 1 Reply Last reply 19 Jul 2017, 20:00
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            • Z Zrako
              19 Jul 2017, 19:05

              @declan is there plenty of free play on the lever?

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              declan
              wrote on 19 Jul 2017, 20:00 last edited by
              #11

              @zrako yes mate

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              • C Offline
                C Offline
                Calum
                wrote on 19 Jul 2017, 20:44 last edited by
                #12

                Yeah but the load on the clutch in 1st is going to be minimal.

                Always Originate, Never Pirate!

                D 1 Reply Last reply 19 Jul 2017, 21:04
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                • C Calum
                  19 Jul 2017, 20:44

                  Yeah but the load on the clutch in 1st is going to be minimal.

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                  declan
                  wrote on 19 Jul 2017, 21:04 last edited by
                  #13

                  @calum so what would you lean to will bad plates have this effect?

                  C 1 Reply Last reply 19 Jul 2017, 22:39
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                  • D declan
                    19 Jul 2017, 21:04

                    @calum so what would you lean to will bad plates have this effect?

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                    Calum
                    wrote on 19 Jul 2017, 22:39 last edited by
                    #14

                    @declan Wouldn't be a bad place to start.

                    An idea would be to see if it pulls fine with no load on the engine.

                    So first just put the bike on a paddock, start it and go through all the gears. If that works no problems then jump on bike and od the same but keep it part throttle only. No load.

                    Always Originate, Never Pirate!

                    D 1 Reply Last reply 19 Jul 2017, 23:43
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                    • C Calum
                      19 Jul 2017, 22:39

                      @declan Wouldn't be a bad place to start.

                      An idea would be to see if it pulls fine with no load on the engine.

                      So first just put the bike on a paddock, start it and go through all the gears. If that works no problems then jump on bike and od the same but keep it part throttle only. No load.

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                      declan
                      wrote on 19 Jul 2017, 23:43 last edited by
                      #15

                      @calum I've tried it with no load it works pretty much as it should

                      C 1 Reply Last reply 19 Jul 2017, 23:46
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                      • D declan
                        19 Jul 2017, 23:43

                        @calum I've tried it with no load it works pretty much as it should

                        C Offline
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                        Calum
                        wrote on 19 Jul 2017, 23:46 last edited by
                        #16

                        @declan With load on the engine does it revs hard and no power. Clutch is slipping then.

                        Either adjust it or replace it.

                        Always Originate, Never Pirate!

                        D 1 Reply Last reply 20 Jul 2017, 10:26
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                        • C Calum
                          19 Jul 2017, 23:46

                          @declan With load on the engine does it revs hard and no power. Clutch is slipping then.

                          Either adjust it or replace it.

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                          declan
                          wrote on 20 Jul 2017, 10:26 last edited by
                          #17

                          @calum no it lacks power off the line when moving its decent shift into 3rd the revs die down to a slow idle and you go about 3mph

                          C 2 Replies Last reply 20 Jul 2017, 10:27
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                          • D declan
                            20 Jul 2017, 10:26

                            @calum no it lacks power off the line when moving its decent shift into 3rd the revs die down to a slow idle and you go about 3mph

                            C Offline
                            C Offline
                            Calum
                            wrote on 20 Jul 2017, 10:27 last edited by
                            #18

                            @declan Nah doesn't sound like clutch then.

                            Sounds like it's a carb setting.

                            Take the plug out and have a look.

                            Could simply just not getting enough fuel.

                            Always Originate, Never Pirate!

                            D 1 Reply Last reply 20 Jul 2017, 10:52
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                            • C Calum
                              20 Jul 2017, 10:27

                              @declan Nah doesn't sound like clutch then.

                              Sounds like it's a carb setting.

                              Take the plug out and have a look.

                              Could simply just not getting enough fuel.

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                              declan
                              wrote on 20 Jul 2017, 10:52 last edited by
                              #19

                              @calum that's what I'm thinking as after I try hit 3rd and stop it feels starved not revving clean and real slow idle but sorts it's self out after a rest I've been doing some tests as it's got an open filter not the box as I have no rubber or filter for the air box but I haven noticed anything by restricting air flow

                              1 Reply Last reply
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                              • D declan
                                20 Jul 2017, 10:26

                                @calum no it lacks power off the line when moving its decent shift into 3rd the revs die down to a slow idle and you go about 3mph

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                                Calum
                                wrote on 20 Jul 2017, 12:52 last edited by
                                #20

                                @declan Sounds like fueling to me mate.

                                Always Originate, Never Pirate!

                                D 1 Reply Last reply 20 Jul 2017, 14:09
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                                • C Calum
                                  20 Jul 2017, 12:52

                                  @declan Sounds like fueling to me mate.

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                                  declan
                                  wrote on 20 Jul 2017, 14:09 last edited by
                                  #21

                                  @calum I'll pick up a new carb and see how it goes thank you

                                  C 1 Reply Last reply 20 Jul 2017, 16:35
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                                  • D declan
                                    20 Jul 2017, 14:09

                                    @calum I'll pick up a new carb and see how it goes thank you

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                                    Calum
                                    wrote on 20 Jul 2017, 16:35 last edited by
                                    #22

                                    @declan Just sort heone you got outmate.

                                    Always Originate, Never Pirate!

                                    D 1 Reply Last reply 20 Jul 2017, 17:06
                                    0
                                    • C Calum
                                      20 Jul 2017, 16:35

                                      @declan Just sort heone you got outmate.

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                                      declan
                                      wrote on 20 Jul 2017, 17:06 last edited by
                                      #23

                                      @calum ive been through it more times I can count and never found any issues it's spotless and as for the settings I wouldn't have a clue I'm guess it's way lean on the a:f screw but it turns off on command when hot using the choke

                                      1 Reply Last reply
                                      0
                                      • J Offline
                                        J Offline
                                        Jens Eskildsen
                                        wrote on 20 Jul 2017, 18:13 last edited by
                                        #24

                                        Sounds rich to me. Lean would cause a high hanging idle. The bike should still rev out, just without much power.

                                        When rich, everything is sluggish, and going WOT can feel like youre hitting a rev limiter, or as if the bike has a restriction.

                                        Have you done all the basics? Fresh plug and clean airfilter? Is your floathight correct?

                                        D 1 Reply Last reply 20 Jul 2017, 18:26
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                                        • J Jens Eskildsen
                                          20 Jul 2017, 18:13

                                          Sounds rich to me. Lean would cause a high hanging idle. The bike should still rev out, just without much power.

                                          When rich, everything is sluggish, and going WOT can feel like youre hitting a rev limiter, or as if the bike has a restriction.

                                          Have you done all the basics? Fresh plug and clean airfilter? Is your floathight correct?

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                                          declan
                                          wrote on 20 Jul 2017, 18:26 last edited by
                                          #25

                                          @jens-eskildsen that's a no on the float I've never really done that unless I really need to and if it's rich what do you reccomend a:f screw for move the float pin? Plug is good and filter is good no air leaks

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