I have a '52, 3100 with the original 216, Rochester B, 6V, oil-bath, etc., pretty much how she came from the factory. I have owned her for two years. Previous owner rebuilt the engine. I had her tuned, plugs, timing, points, wires done by an old-timer when I first got her. She runs great. The problem is that she will sit for two or three weeks sometimes without being cranked. Then, I have to crank and crank and crank and crank, then crank some more before she finally fires. I can crank her the next day, or several days later with no problem. So, I am absolutely sure that the problem is that the carb empties when she sits for so long. There is absolutely no evidence of gas leakage anywhere under the carb. I have rebuilt the carb (not for this reason, but for sticking float)and the fuel pump(original glass bowl) has all new gaskets. I know that the fuel bowl is vented to atmosphere, so could fuel simply be evaporating during the time she is not ran?
