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carbs, especially at idle, are sensitive to the atmospheric pressure and float hight. The feed is usually at the rear of the carb to prevent starvation when accelerating while still operating off of the idle/progression circuit. Thats why when there is a problem w/ the idle circuit the engine will tend to cut out when braking. If the fuel sloshs to the front of the carb the pressure differential decreases enough so less fuel gets into the engine. If the idle circuit is dirty, and the float level is low enough when the car is tilted in a nose down attitude, if the manifold vacuum is low, etc.,etc., the situation gets worse. Henry Yarborough ------------------------------------------------------------------- Too much? Digest! mailto:type3-d-request@vwtype3.org Subj=subscribe