My 07 Bus made this high-pitch whistling sound that I could not figure out. It drove me nuts because it would happen whether the bike had sat for days, or right after a ride. Just a sof hi-pitched tone. Finally tracked it down to the gas tank, opened the lid, and it made a quick whooshing sound and that fixed it.
Izzat okay?? Is there a vacuuum building up for some reason. Bike runs great...s
Izzat okay?? Is there a vacuuum building up for some reason. Bike runs great...s