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djlanier · 05-20-2019, 02:54 PM

I’ve been trying to adjust the idle on the Model B carb on my ‘28 roadster. However, no adjustment to the idle air mixture screw will cause it to stall. In fact, when I near all the way CW it seems to rev up a little. According to Les Andrews’ book this indicates an air leak in the intake system. All I can find is by spraying carb cleaner around the throttle shaft the rpm will pick up slightly. What is the best way to remedy this? The engine requires very little choke to start cold but when I do choke it I find a little fuel on the bottom of the carb around the drain plug.

05-20-2019, 02:54 PM	#1
djlanier Junior Member Join Date: Oct 2014 Location: Prosper,Texas Posts: 22	Need Help with Model B Carb I’ve been trying to adjust the idle on the Model B carb on my ‘28 roadster. However, no adjustment to the idle air mixture screw will cause it to stall. In fact, when I near all the way CW it seems to rev up a little. According to Les Andrews’ book this indicates an air leak in the intake system. All I can find is by spraying carb cleaner around the throttle shaft the rpm will pick up slightly. What is the best way to remedy this? The engine requires very little choke to start cold but when I do choke it I find a little fuel on the bottom of the carb around the drain plug.