Bonneville America Forums Forums Technical Forums Performance Mods Changing Jets without removing the carb

Have you uncapped and adjusted the pilot screws? That would be first. Probably have to pull the carbs to do that. The newer ones aren't capped. Is this a standard Bonneville? I know on my America I've dropped the bowls a number of times and never pulled the carbs. May want to try some Seafoam or a similar product in the tank.