Navigation

    DT125R FORUM

    • Register
    • Login
    • Search
    • Recent
    • Tags
    • Popular
    • Users
    • Groups

    rattle sound

    Engine
    7
    29
    2979
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • Irongamer727
      Irongamer727 last edited by

      hello guys! The bike is making a rattle noise on low rpm and I have looked around a bit and it seems it is not that unusual? A new cylinder is on the way but will probably not be mounted until next season. What do you guys think? A serious problem?

      declan 1 Reply Last reply Reply Quote 0
      • F
        finnerz89 last edited by

        Without hearing it, I have no idea. But it is a 2 stroke so probably to be expected and probably nothing to worry about.
        It's not like it has valves and cam chains to worry about

        1 Reply Last reply Reply Quote 1
        • declan
          declan @Irongamer727 last edited by

          @irongamer727 could be something as simple as loose rivets in your exhaust

          1 Reply Last reply Reply Quote 1
          • A
            andrewj1680 last edited by

            That or small end rattling worse case

            1 Reply Last reply Reply Quote 0
            • Irongamer727
              Irongamer727 last edited by

              Can I somehow send a video?

              Calum 1 Reply Last reply Reply Quote 0
              • Calum
                Calum @Irongamer727 last edited by

                @irongamer727 Upload it to YouTube

                1 Reply Last reply Reply Quote 0
                • Irongamer727
                  Irongamer727 last edited by

                  https://www.youtube.com/watch?v=tKTD9T3pPLI&feature=youtu.be

                  D 1 Reply Last reply Reply Quote 0
                  • Calum
                    Calum last edited by

                    Sounds like the snorkel is missing.

                    1 Reply Last reply Reply Quote 0
                    • D
                      dtrjim @Irongamer727 last edited by

                      @irongamer727
                      sound to me like powervalve, mine used to do this, bushes get a bit worn and they rattle , or piston is hitting it and it rattles, either way take cover of pv and feel the end will soon know 😃

                      1 Reply Last reply Reply Quote 0
                      • Irongamer727
                        Irongamer727 last edited by

                        the powervalve is open and not hooked up. dont think it is in contact with the piston as it has been sounding like this for a couple of 1000 kilomiters. dont you guys think it might be a worn piston? the snorkel is ON

                        Calum 1 Reply Last reply Reply Quote 0
                        • Calum
                          Calum @Irongamer727 last edited by

                          @irongamer727 Ahh if the PV is pinned that would explain why I thought the snorkel was out.

                          1 Reply Last reply Reply Quote 0
                          • Irongamer727
                            Irongamer727 last edited by

                            Ye. Previous owner managed to f*ck up the port somehow. Running great without but the sound worries me. Need this cylinder to last the season out.

                            Calum 1 Reply Last reply Reply Quote 0
                            • Calum
                              Calum @Irongamer727 last edited by

                              @irongamer727 Literally mitaka piston is £40 plus gaskets £20 and an hour job to replace.

                              There isn't really an excuse for two strokes to fail.

                              It's either the piston fails and costs you a full rebuild, or you spend £60 and replace the top end making it good for another 10k miles.

                              If it is even the top end that's the problem.

                              Either way, you're putting your life in the hands of a machine you don't feel comfortable in. If the machine fails, you have the risk of taking not only your life, but those around.

                              For the sake of strippng the cylinder down for a quick gander, it hardly seems worth the hassle of it failing.

                              That's my two cents anyway. I would always be overly cautious.

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

                                @calum and always check handle bars for hair line cracks 😅😅

                                Irongamer727 1 Reply Last reply Reply Quote 0
                                • Irongamer727
                                  Irongamer727 @declan last edited by

                                  This post is deleted!
                                  1 Reply Last reply Reply Quote 0
                                  • Irongamer727
                                    Irongamer727 last edited by

                                    How big is the chance that a dt engine with 24000 km on it has failed connecting rod bearings? Anyone experienced that?

                                    1 Reply Last reply Reply Quote 0
                                    • Nottsbiker
                                      Nottsbiker last edited by

                                      Entirely possible

                                      Depends on use and abuse tbh

                                      1 Reply Last reply Reply Quote 0
                                      • Irongamer727
                                        Irongamer727 last edited by

                                        Does that sound have any similarity with that?

                                        1 Reply Last reply Reply Quote 0
                                        • Nottsbiker
                                          Nottsbiker last edited by

                                          Sorry I'm on holiday in France at moment miles from any wifi 😉

                                          1 Reply Last reply Reply Quote 0
                                          • Irongamer727
                                            Irongamer727 last edited by

                                            Spoke to a yamaha dealer today. He said not to worry and that it most likely is the powervalve vibrating a bit.

                                            A 1 Reply Last reply Reply Quote 0
                                            • First post
                                              Last post