fuel condensate drain on the carb

Posted by David Grubbs On 2012/12/8 21:53:59

In the 1939 Salesman Data Book, on page 8, it shows a drain from the carb that is supposed to drain off excess fuel and prevent flooding when restarting. The tube has a back flow preventer that closes it when the engine is running. I've had several Packards on this vintage and have never seen the drain. Does anyone have one on their car? And I guess the next question is does it make any difference on the performance of the engine?