drunkaroos
XS650 Member
Bike splutters really hard at 5000rpm, and when I hold it at around 25% throttle. Carbs are a fresh rebuild, already checked the diaphragm for leaks, properly synched, and mixture screws are tuned according to the carb guide. Coil is a new MikesXS high output. Haven't looked at the timing yet but I checked it last month with a timing light and it was in spec. Been chasing this issue for a few days, any help on the cause would be appreciated! Thanks