Street Bike Carburetor Flooding, Not running on all cylinders?

[mattcruff1569]

Okay, so i went for a ride yesterday. Felt a sudden major loss in power. Came home, moved tank out the way, removed the air cover, and started the bike. Gas was coming out of the cylinder 3's carb, (out of the two small holes at the bottom rear of the carb). There was also a small puddle in the carb. I removed the spark plug wire for that one. No power was lost. So i know its not running on that cylinder. Killed the engine removed that spark plug. Excellent spark. So i guess since that one carb is flooding its not running that cylinder correctly. (runs great when running high RPMs. Shouldn't the power of the motor take all that gas and push it out the exhaust? Do you think i have a intake valve stuck open a little? or do you think the carb is just putting out too much gas? what are the easy fixes?

 

[MadJack]

The small holes in the carburetor where the fuel was coming from are float bowl vents. The fuel was coming from these holes because the fuel level is too high in the float bowl. This is allowing too much fuel to enter the cylinder and causing either a sever misfire or flooding the cylinder to the point where it doesn't fire at all. This would explain your severe loss of power.

I would look for trash in the carburetor float needle valve for the cylinder that is giving problems. The trash in the needle valve may not be allowing the valve to close when it is supposed to.

Another possibility is that the carburetor float for that cylinder may have developed a problem. The float could have a hole in it and sank. There could be other issues that are not allowing the float to work properly.