My 47 runs like a sewing machine. It sounds and performs great. All new tune up parts, NOS replacement distributor, rebuilt carburetor. Here is my problem. If it sits for more than a day the gas drains from the carburetor and fuel line. No leaks, just appears to backflow down to fuel pump, which is a new carter mechanicail pump. I have to either crank and crank and crank until the fuel fills the line again or squirt a little shot of gas into the carburetor to start it. Once it has started I can shut it down and it starts right back up. Sit for a day or more and same thing. Is there anything I can do? One other observation. I have an inline clear fuel filter. right before the carburetor. It is a new generic one that is horizontal. It is never more than half full. Engine off or on. Only about 1/2 to 1/3 of the actual filter is sitting in gas. I can't even see how it is pulling gas out to the carburetor. Maybe not an issue but it just seemed strange to me. I thought it should be full.
