Home Auto Repair How to Adjust Carburetor Floats

How to Adjust Carburetor Floats


Your vehicles carburetor float is a vital part of the fuel system. It is the gauge which tells your carburetor how much fuel it needs and when it needs it. As you depress the gas pedal, fuel is sucked out of the carburetor reservoir which causes the carburetor float to drop. As the float drops, it opens the needle valve and allows more fuel to enter the reservoir. When you let up on the gas pedal, you decrease the demand for fuel which has a chain reaction. Fuel is no longer sucked out, which causes the float to return to its normal position and closes the needle valve, shutting off the flow of fuel until it is needed again. All of this can happen within fractions of a second.

Step 1

Remove the linkage from your carburetor with a pair of needle-nose pliers and disconnect the vacuum hoses leading to your carburetor. Mark the parts to remember how they were assembled for later reference.

Step 2

Remove the bolts that are holding the carburetor to the engine and take the carburetor out of the engine. Lay the carburetor out on top of your work space.