Something sounds wrong...

Discussion in 'General Tuning' started by brad6999, May 5, 2019.

  1. brad6999

    brad6999 :)

    Messages:
    17
    Rides:
    Aprilia SR50R 2014
    Hey, currently got a SR50R 2014 with:

    Stage6 Sport PRO Variator - Piaggio
    Polini Sport Liquid Cooled 70cc Piaggio Cylinder Kit
    Stage6 PRO Replica Carbon Exhaust - Piaggio
    Carbon fiber reeds

    with the standard carb running a 80main jet and a 38 idle jet, now when i get back from going out on the bike when its idling after being warmed up it will make a weird humming noise and im not sure why. Anyone know why?

    If you need anymore info that just reply and i will answer asap. Ty
     
  2. milo2025

    milo2025 Trip to Trumpton

    Messages:
    727
    Hmmm strange, you mean like a low pitched humming noise or a high pitched humming noise or somewhere in between? Sounds to me like at tickover is idling too fast once it's warmed up to standard operational temperature. Does your bike have a rev gauge? Is the pipe or something touching something else and causing it to vibrate?
     
  3. brad6999

    brad6999 :)

    Messages:
    17
    Rides:
    Aprilia SR50R 2014
    Can't explain the noise better than a weird humming noise. And maybe so does that mean just change the idle jet back and see how it runs?
     
  4. milo2025

    milo2025 Trip to Trumpton

    Messages:
    727
    Yeah I reckon that would be a good starting point for sure. Let us know how you get on.
     

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