The Chevrolet 350-cubic-inch engine has been found in Chevrolet vehicles for decades now, and featured a two-barrel (2-BBL) carburetor up until 1986, when General Motors introduced a throttle body injection system. These carburetors needed constant maintenance, being tweaked for weather, temperature or different fuel mixtures, depending on the driving conditions. One way to fix these problems is to remove the carburetor from the engine and rebuild it to optimize its performance. Removing the carburetor should take about 30 minutes.
Turn off the engine and open the hood. Allow the vehicle to cool until you can put your hand flat on top of the radiator cap without burning yourself. Remove the wingnut on the top of the air cleaner and pull the air cleaner off the carburetor and put it to the side.
Pull off the small vacuum lines from the carburetor with your hands. Unplug the wiring harness to the carburetor with your hands.
Remove the fuel line running to the carburetor using a line wrench. Plug the fuel line with a small piece of rag to prevent spills. Disconnect the throttle linkage using the 3/8-inch ratchet and socket and pull the linkage to the side so the carburetor is free.
Unbolt the carburetor from the intake manifold using the 3/8-inch ratchet and socket. Lift it up by the base and pull it to the side, away from the engine compartment.
