Reply To: Need help with hyosung GT125 P

[Cobra2]

The vacuum-piston seems stuck open on one carb….? Dirt? Broken spring?

Old and grumpy,(?), have fairly wide engine & tuning experience, "restoring/resto-mod" on cars & mc, worked as electronic tech. (retired).

GT125R - sold. New (used): 2012-GT250R-efi (sold)+ 2017-GV-125C (sold) - got my old 2018-GT-125R back... 🙂