What's this sound

Discussion in 'The Workshop' started by Xylon, Sep 13, 2013.

  1. Xylon

    Xylon Member

    Messages:
    54
    Rides:
    Honda PS125i
  2. brgil96

    brgil96 Member

    Messages:
    192
    Link doesnt work for me
     
  3. MARSH

    MARSH Whooooo!

    Messages:
    3,266
    Rides:
    Piaggio Typhoon
    What scooter is it? 2t/4t 50/125?
     
  4. Xylon

    Xylon Member

    Messages:
    54
    Rides:
    Honda PS125i
    4t 125cc
    Fuel injected
    Liquid cooled
     
  5. MARSH

    MARSH Whooooo!

    Messages:
    3,266
    Rides:
    Piaggio Typhoon
    It's more than likely to be the sprag/one way clutch and starter motor turning over.
     
  6. MiNoR cOnFuSiOn

    MiNoR cOnFuSiOn Administrator Staff Member

    Messages:
    14,276
    Rides:
    et2 monster
    hang on, your turning the engine in running direction slowly, and its making this noise? check the camchain tentioner... cam chain could be loose/rubbing.. its a lil hard to diagnose with a sound clip... deffo turning the variator and not the flywheel? if its the flywheel your turning the engine OPPOSING running direction, a BIG no no with a 4t engine... it will make noise/break things
     
  7. Xylon

    Xylon Member

    Messages:
    54
    Rides:
    Honda PS125i
    yes
    yes
    OK
     
  8. Xylon

    Xylon Member

    Messages:
    54
    Rides:
    Honda PS125i
    Won't be able to check it for a couple of weeks because I see in my Haynes: `Discard the gasket and O-ring as new ones must be used on installation' in the cam chain tensioner instructions. Don't have spare gasket or o-ring.
     
  9. MARSH

    MARSH Whooooo!

    Messages:
    3,266
    Rides:
    Piaggio Typhoon
    The sound clip didn't work for me so I'm probably wrong, clockwise on the variator I would say clutch, anti clockwise as Minor say's you may have a problem?
     
  10. Xylon

    Xylon Member

    Messages:
    54
    Rides:
    Honda PS125i
    Try the link again. The server was advertising the wrong mime type.

    The engine seems to run fine but I must admit I didn't notice that sound last time I adjusted my valve clearances.
     
  11. Xylon

    Xylon Member

    Messages:
    54
    Rides:
    Honda PS125i
    OK I just verified anti-clockwize is the normal direction of engine rotation.

    Actually I think the sound is coming from inside the transmission case itself. But on this scooter you can't remove the transmission case without removing the floor panel and you can't remove the floor panel without removing the inner front panel, belly panel and body panels and you can't remove the inner front panel without removing the upper front panel and you can't remove the upper front panel without removing the front handlebar cover and you can't remove the body panels without removing the centre panel, storage box and luggage rack and you can't remove the storage box without removing the seat. So to open the transmission case is like a two hour job, and another two hours to put it back together again.

    If it's coming from inside the transmission case is it something to worry about?
     
  12. Xylon

    Xylon Member

    Messages:
    54
    Rides:
    Honda PS125i
    Opened up the transmission this morning. Turned out I didn't need to remove the floor panel. I could get it of by taking all the panels off the rear of the scooter, the belly panel, the left hand passenger footrest and the air filter. Possibly didn't need to remove even that much but it might be hard if I didn't.

    ANyway; it turns out it was just the drive belt squeaking on the pulleys. Drive belt is about 2000 miles old, width measures within the service limit, drive faces clean. No foreign bodies in there. I guess it's fine.

    :)
     

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