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    Bike running fast revs

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    • declan
      declan last edited by

      So new reeds installed carb boot looks to be installed right aswell as inlet manifold and the cable is loose and not binding snorkel is installed airbox is complete sounds like it’s running crazy lean but I’ve done nothing to cause this any ideas while I have a break?

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      • Calum
        Calum last edited by

        Air Leak

        declan 3 Replies Last reply Reply Quote 1
        • declan
          declan @Calum last edited by

          @calum just checked and no bud I’m stumped everything is as it should be

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          • declan
            declan @Calum last edited by

            @calum the idle scre has no effect I really think the revs stuck on but I don’t see how it’s possible since I have slack and smooth running cable

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            • Zrako
              Zrako last edited by

              Do you have a nice play on throttle? Check the rubber if it sits nicely on filter housing.

              declan 1 Reply Last reply Reply Quote 0
              • declan
                declan @Zrako last edited by

                @zrako yes it all seems sweet

                declan 1 Reply Last reply Reply Quote 0
                • declan
                  declan @declan last edited by

                  @declan carb has been sealed so not debris can get in it

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                  • declan
                    declan @Calum last edited by

                    @calum the cable has come out the carb again why has it done this again?

                    Calum 1 Reply Last reply Reply Quote 0
                    • Calum
                      Calum @declan last edited by

                      @declan Dunno mate. Have a look

                      declan 1 Reply Last reply Reply Quote 0
                      • declan
                        declan @Calum last edited by

                        @calum no idea why it was out it’s back in again do you have any tips to fit the carb rubber to the air box as I have a right shit time struggling to do it

                        Calum 1 Reply Last reply Reply Quote 0
                        • Calum
                          Calum @declan last edited by

                          @declan Oh dear.

                          Yes, take the air filter out.

                          Work from inside of the box outwards.

                          Use a soft spudger (dull flat edge NOT A SCREW DRIVER!!!!!) to prise the angle of it into the box.

                          Once you learn how to do it, it's easy.

                          Do not force it in. It will go in without hesitation once you have that technique down

                          declan 1 Reply Last reply Reply Quote 0
                          • declan
                            declan @Calum last edited by

                            @calum I’ve done it twice now and I hate it lol

                            Calum 1 Reply Last reply Reply Quote 0
                            • Calum
                              Calum @declan last edited by

                              @declan Technique my boy! It's all in the technique.

                              declan 1 Reply Last reply Reply Quote 0
                              • declan
                                declan @Calum last edited by

                                @calum lol got it in pretty easy but it’s still revving to the moon no air leaks cable is 100% free safe to say I’m pretty clue less and pissed off

                                Calum 1 Reply Last reply Reply Quote 0
                                • Calum
                                  Calum @declan last edited by

                                  @declan If it was working fine before hand, then it's going to be something properly simple. Rushing isn't going to fix the problem.

                                  My guess is that it's an air leak, because this is the most common type of problem.

                                  The inlet manifold gasket should be renewed. As said previously, these are prone to failure upon renewal.

                                  You said your inlet had a split in it, have you replaced the inlet? Sounds like it's past its best and I would renew it with a new one whilsy Yamaha still make them...

                                  declan 1 Reply Last reply Reply Quote 0
                                  • declan
                                    declan @Calum last edited by

                                    @calum your right it just has to be an air leak there’s no other explanation so if I use wd40 should I be looking for bubbles as rpm change will not be reliable

                                    Calum 1 Reply Last reply Reply Quote 0
                                    • Calum
                                      Calum @declan last edited by

                                      @declan The added WD-40 should be combustable, bringing the mixture down so the idle should drop.

                                      It'll be something simple. It might be that the reeds are installed incorrectly. Too Much overlap at the end etc...

                                      declan 1 Reply Last reply Reply Quote 0
                                      • declan
                                        declan @Calum last edited by

                                        @calum checked before install they were a perfect fit and actuall were the same ones that were already in there

                                        declan 1 Reply Last reply Reply Quote 1
                                        • declan
                                          declan @declan last edited by

                                          @declan should there be a gasket between the engine and the reed block spacer

                                          Calum 1 Reply Last reply Reply Quote 0
                                          • O
                                            oldman last edited by

                                            Yes 0_1507742590451_20171011_182026-979x1305.jpg

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