by Horacio Garcia
Oliver Sved / iStock / Getty Images
The carburetor float regulates the amount of fuel or gasoline that resides in the tank. The carburetor reservoir is where fuel is drawn into the intake manifold. A faulty or stuck carburetor float causes engine problems. Watch for certain signs and symptoms if you suspect that the carburetor float is sticking.
The engine does not work
One of the signs that the carburetor float is sticking is when the engine is not idle. The float does not leave enough fuel in the tank, allowing a constant engine idle. The carburetor float is stuck in the closed position and only a small amount of fuel is leaking into the tank.
A flooded carburetor is another symptom that the carburetor float is sticking. The float is stuck in the open position, allowing fuel to flow freely into the tank and then into the intake manifold. Once too much fuel is allowed to enter the carburetor reservoir, the carburetor floods and cannot be started until all the fuel has been expelled from the reservoir.
Engine stalls or hesitates
The engine will start to stall or hesitate when the carburetor float gets stuck. This symptom develops in driving conditions when the operator tries to accelerate. The engine will act as if it is going to die, but stops and starts to accelerate normally. Engine hesitation is a similar event.
Another sign or symptom of a stuck carburetor float is when the engine fails or misfires. One or more cylinders are not getting enough fuel or are not getting too much fuel when they are ignited by the spark plugs. This happens when the float is stuck, either in the open or closed position. The engine will stall, will not idle smoothly, or backfire once the carburetor float gets stuck.