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
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?
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?