I have a 1953 Chevrolet pickup with a 1957 Chevrolet 235 engine and a 1959 Rochester B carburetor. It ran well the last time I cranked it. I did a rewire job on it and hadn't cranked it in awhile. I got it cranked and it would run as long as the choke was closed or partially closed. When I open the choke it quits running. I blew out the line from the fuel pump to the tank and took the line loose going to the carburetor and cranked the engine. I got good spurts from the fuel pump. Any suggestions would be appreciated. Thanks