Holley-idle air screw adjustment non functional

website holley transfer slot adjustment Carburetor Transfer Slots sweet sugar slot Most gasoline carburetors will have the butterflies adjusted with a small length of the idle transfer fuel slot

holley transfer slot adjustment The idle ports and idle transfer slots are located in the bores of the throttle blades Intake manifold vacuum creates the depression that pulls  On those carbs, if you adjust the idle mixture rich enough for a good idle, than you also are adjusting the idle transfer slot richer than you  The idle transfer slot is intended to add additional fuel from the idle circuit as soon as the throttle blades are opened past curb idle This

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