Home Tips & Tricks How to Adjust a Carter BBD 2 Barrel

How to Adjust a Carter BBD 2 Barrel


The BBD was a two-barrel carburetor manufactured by Carter during the 1960s and 1970s. The BBD was produced exclusively for Chrysler, Plymouth and Dodge vehicles. As with all carburetors, the BBD requires periodic adjustments. The idle mixture screws determine the amount of air and fuel distributed by the carburetor. Within the carburetor are two floats designed to ensure that the carburetor has a ready-supply of fuel to prevent hesitation. The dashpot is an emissions-reducing device that it important for smog control. These components should be adjusted as part of every tune-up.

Things You’ll Need

Gas analyzer, Clamp, Screwdriver, Carburetor T-scale, Wrench (manual transmissions only)