The 2150 improved on the 2100s design through the introduction of a variable air bleed system, which keeps the air to fuel mixture better balanced throughout the carburetor's full range of operation. The 2150 models from 1983 to 1986 were electronic feedback carburetors equipped with Ford's EEC-IV.[2]
Motorcraft 2150 booster venturi with variable air bleed system
Unlike the Autolite 2100, the Motorcraft 2150 was available only in two venturi sizes. Both were available in manual and automatic transmission configurations.
Note: The 250-I6 is derived from the Falcon line (144-170-200). U.S. versions were only available with an integral cast head and intake making them only able to accept a one-barrel carb. Foreign versions were also made with typical two-piece intake and head.
These larger 2150s were generally used in large Ford passenger cars and trucks equipped with 335-series engines. These were also used, with the addition of an altitude compensator, on Jeep Grand Wagoneers equipped with the AMC 360 V8.
Ford engines commonly equipped with the 1.21 venturi 2150:
