First thing I checked after kinked fuel line was vacuum line, everything looks good. Diaphragm is probably shot...that or I have a float sticking shut in my carbs..or a piece of debris blocking the little screen on the inlet...it is such a huge pain to get those carbs off tho, it's a horrible design. The air box can't be removed with the carbs on, so you need one person to pull it back out of the way while you pull the carbs halfway out the side of the bike, then disconnect the throttle cables, then pull them out. Nothing is where you want it and everything is in the way.