Adjusting the Motorcraft 2 barrel carburetor to the proper settings will provide you with more performance and better fuel mileage. The Motorcraft 2 barrel carburetor has two idle mixture adjustment screws on the front near the base, and an idle speed adjustment screw next to the choke cable. The carburetor can be adjusted with some basic tools in just a few minutes, keeping the engine running properly and helping to extend the life of the motor.
Turn the two idle mixture adjustment screws clockwise with a screwdriver until they stop. Do not over-tighten the screws. Turn both screws back 1 1/2 turns counterclockwise to have an even start point for adjusting the Motorcraft 2 barrel carburetor.