Well, I've taken a closer look at the carb. It apparently has been spewing fuel, because there's varnish at the base, and the outside of the carb is wet. I figure a rebuild is in order. As best as I can tell, the tab says 420 5 or 420 S, which makes it a carb from a 1939 or 1940 Chevy. Funny, another carb came with the truck, and that appears to be from a 1933 Chevy. Does anyone want to trade a 1948 carb for a 1940 carb and a 1933 carb?
Since the 420 S carb has been working for the past three years, I guess I'll rebuild it, or have it rebuilt. I hesitate to do it myself because I don't have the facilities for cleaning everything properly, but cost may overrule that.
