Carter Model BBD 2 Barrel Carburetor

Fig. 1 Carter BBD carburetor.:

The Carter model BBD 2 barrel carburetor incorporates three lightweight aluminum assemblies, the air horn, main body and throttle body, Fig. 1.
The air horn contains the choke valve assembly, mechanical linkage for accelerator pump and the metering rods and bowl vent mechanism.
The main body contains the fuel bowl, accelerator pump, vacuum piston andmetering rod assembly, venturi assembly and solenoid, if equipped.
The throttle body contains throttle valves and levers, choke housing, choke vacuum diaphragm and idle mixture screws.
The carburetor used on 1984---87 models is a feedback type whose steppermotor has two tapered metering pins. Each metering pin is moved in and out of the carburetor to achieve the proper air/fuel ratio.