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Re: Adjusting dual AFB's

From: Jim


This is what my 56 DeSoto Adventurer service procedure says:

IDLE SPEED- Connect tachometer and warm engine to normal operating temp. so chokes will be fully off and carbs on slow idle. Remove the accelaerator shaft rod at rear carb throttle lever. Set engine idle at approximately 600 RPM. ( A suggested method is to back off the front carb idle speed adjusting screw completely and make the adjustment with the rear carb idle speed adjusting screw. Then bring the front idle speed adjusting screw up to point of contact with the stop so it will share the load.)

Hopes this helps



Last changed: July 19, 2018