How to Bolt Down a Carburetor
- 1). Raise the hood of the car and inspect the carburetor mounting. Note how it is installed and if insulators are used to prevent the fuel from boiling. In some cases, an extra-thick gasket is used that is made of special material that disperses the heat. Other carburetors use thick aluminum bases that are built into the carburetor.
- 2). Use a wrench to remove the carburetor fuel lines and disconnect the throttle linkage. Unbolt the mounting fasteners and lift the carburetor off of the engine. Use a gasket scraper to clean all of the old gasket material from the carburetor and engine manifold. Do not gouge the aluminum parts with the scraper.
- 3). Install new gaskets. In some cases, this requires multiple gaskets be replaced, both under and on top of the insulator. Fit the carburetor in place and hand-tighten the screws. Use the wrench to gently tighten the screws in an "X" pattern, working your way around the carburetor several times. Do not hurry the process. The idea is to draw the carburetor down a little at a time. Over-tightening the fasteners will warp the carburetor base.
- 4). Reinstall the fuel line and reattach the linkage. Replace the air cleaner and start the car. Test-drive the car and make sure it is running properly. If the carburetor is installed improperly, it may have a vacuum leak, and the idle and power qualities will be diminished.
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