It won't start unless its choke is fully engaged and when you take the choke off it dies. If you give it gas it dies. if you slowly let the choke off and give it gas it dies.
SOURCE: Honda 750 stalls if throttle is opened unless choke is on.
Hmm , sounds like a vacuum leak, check all the hoses, and the rubber intake manifolds and clamps
SOURCE: the motorcycle will only start if the choke is all
a choke is designed to restrict air so that the mixture is rich (more fuel) for warm up. no choke should be used after 5 minutes or so. heres what you need to do. take the carb apart and on the bottom in the bowl of the carb are your jets make sure they are all clean and clear so that all circuits are open (quarter throttle, mid throttle and full throttle.) each jet controls parts of those three ranges. also turn your mixture screw which is usually located right under the motor sie of the carb. turn it all the way in then out 2 turns if you live in high elevation, turn it out only 1 turn and see how it all works. one last thing your problem might be solved by he second option first so try it first.
SOURCE: 2002 Hyosung GV250 running problems
Time for carb cleaning , blow the jets with compressed air,check the float level.
Check the spark plug and replace if neccessary.
Check the air filter too, and if you don't have an 'inline' filter for your fuel line,install one.
Basically yr bike's engine needs a tune up...check the valve clearance too!
Hope this helps!
SOURCE: 2002 Honda SHADOW SABRE It wont stay running unless it's
More information is needed - aftermarket pipes? any carb work been done to it? is fuel fresh? air filter condition? how are the plugs burning? oily black, white/tan?
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