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  • VTR250 Engine Sound

    My VTR250's engine has a bit of a knocking/rattling sound to it. The sound, when I can hear it, is a very regular knock/tap/rattle, not a chaotic loose rattle.

    I can hear it at idle/low speed but not when I'm going at any speed above low. That might just be because the sound is drowned out by the exhaust and other normal sounds.

    Openly admitting that I know very little about engines, my guess is valves or cam chain. I came to that uneducated guess because the rhythm and location puts it in the top end, and seems to be time in with engine strokes. But what the hell do I know, eh?

    Any tips, advice, etc would be very much appreciated before I call a mechanic.
    Last edited by Pascal; 02-11-2009, 10:04 AM.
    For Triple Lovers & Triple Street Fighers

  • #2
    call for mechanic and get it looked at.
    Interweb talkshows ain't gonna fix it.

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    • #3
      call for mechanic and get it looked at.
      Yes, I will, thanks.

      Interweb talkshows ain't gonna fix it.
      It might be a week or so before I can though, and so I was curious to learn more about what the noise might be, how serious it is, etc.
      For Triple Lovers & Triple Street Fighers

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      • #4
        Sounds to me like you've overboosted and not compensated your EFI mapping, leading to the dreaded #3 cylinder leaning out and borking the rear differential.

        /internet expert




        (seriously, see a mechanic, I can recommend Derek Ball, or K-Tec, both of whom will come to you.)
        Last edited by Barfridge; 02-11-2009, 11:37 AM.
        For LAMS information and resources - http://www.perthstreetbikes.com/foru...thread-156358/
        For LAMS discussion and to ask questions - http://www.perthstreetbikes.com/foru...thread-143289/

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        • #5
          Oh sweet jaysus, not the rear differential?!

          I'll be giving Derek a call to come and see it.
          For Triple Lovers & Triple Street Fighers

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          • #6
            Update:

            Derek's just been. He says sound is normal for a VTR250 with 40k on the clock. It's from a worn chain tensioner, but nothing to worry about yet. Apparently has to get quite a lot worse before replacement becomes necessary.

            Phew!
            For Triple Lovers & Triple Street Fighers

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            • #7
              Did you get him to check the diff?
              For LAMS information and resources - http://www.perthstreetbikes.com/foru...thread-156358/
              For LAMS discussion and to ask questions - http://www.perthstreetbikes.com/foru...thread-143289/

              Comment


              • #8
                Don't be silly man! If you didn't check it, then you don't know it's broken, and it won't cost you any of your now dollars.
                Insert witty comment here

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                • #9
                  He gave me a weird look when I asked about the diff. Said not to believe everything people say. No sure what he meant.
                  For Triple Lovers & Triple Street Fighers

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