Djfknwoo
XS650 Enthusiast
Okay another update for everyone. I completely disassembled the carbs gave them the best cleaning of their lives removed every single thing I could blasted with carb cleaner and compressed air. (I've taken photos this time lol) got them back on the bike she starts up and runs pretty good. Mix screws are at 2.25 - 2.5 turns out. Carbs seem to be synced I did a test with a flashlite upon reassembly to make sure they were both fully closed and opened the same amount when I moved the throttle. (I removed the vac barbs so I'm not fully sure how else I can sync them) took the bike for a 2 hr ride only a tiny bit of back fire upon deceleration (not every time) but she pulls hard with no flat spots. Tonight I'm going to check the valve spacing and make sure it's within spec but I think the problem is much closer to being solved. I'll attach the pics of the bike and the carbs.