For Ford F100 F250 F350 289 302 351 1964-1979 2-Barrel Carburetor 2100 A800 Carb. - Carburetor Structure: The components of a carburetor usually include a liquid fuel storage chamber, a choke, an idling (or slow-running) spout, a main spout, a venturi-shaped air-flow restriction, and an accelerator pump.