Hello all,
I've been bangin my head against the wall with my 99' bandit 1200. The bike idles, revs, and runs perfect until about half way through second gear and above then it breaks up/stumbles and acts as if its not getting fuel, can only run about 1/4 throttle.... Push the clutch in for a second and I can start back off for a couple more seconds than it breaks up again.. First gear will lite the tire off and second will start to pull then nothing. The kicker is the bike ran perfect about 2 weeks ago, all I did was pull the tank and body panels off, painted them, reassembled and went to take it for a ride and nothing but problems... Since the issue arrose I thouroghly went through the carbs cleaning all jets and blew through all journals, checked float heights, rebuilt the petcock, checked for any vacuum/intake leaks, checked for venting issues, no issues with debree in the tank, cleaned and checked every electrical connection/grounds, new spark plugs, checked for shorts in the plug wires, I even tried gutting the petcock and installed an inline valve thinking that maybe the new diaphragm was defective but no improvements and is flowing fuel... Has anyone experienced this type of issue? Like i said it will pull hard until after second gear....??? Any help would be much appreciated. Thanks