Holley carburetors are known for their solid performance and strong power-enhancing capabilities. You can find them in vehicles ranging from the mild-mannered four-cylinder family car to the 1,000-horsepower drag racer. Carburetors take a beating, but with regular maintenance, they can continue functioning for many years. With a rebuilding kit and a few tools, you can quickly return a Holley carburetor to full working order. Holley carburetor kits are available from many auto parts dealers.
Order the proper carburetor rebuilding kit from your local Holley dealer by providing the model number from the side of the unit installed in your vehicle. Get under the hood and disconnect the gas hoses and air-box nozzle from the carburetor with the pliers. Remove the mounting bolts holding the carburetor body to the intake manifold.
Slide the Holley carburetor and the manifold gasket off the engine, and unhook the retainer wire on the bottom of the carburetor float bowl. Unscrew the jet screw located in the middle of the right-hand portion of the carburetor and slide the needle out.
Spray carburetor cleaner throughout the unit to loosen up any "gunk" and then replace the gaskets. Replace the needle with the one from the Holley carburetor rebuilding kit and replace the jet screw.
Install the manifold gasket on the lip of the mount on the motor and slide the carburetor into place. Tighten the mounting bolts on the carburetor to the manufacturer's specifications. Slide the fuel hoses back into place on the carburetor nozzles. Make sure the hoses are tight.
Start up the vehicle and adjust the carburetor jet screw to increase or decrease the amount of fuel entering the combustion chamber. Keep adjusting until the vehicle idles smoothly.
