Last year, my 34 Ford V8 had fuel problems that we out down to residue and rubbish in the fuel tank. I removed it and had it professionally cleaned. While it was out, I blue the fuel line with air, to ensure that it was all clear. Refitted the fuel tank and started it with a prime, but it did not continue running. Bought a new fuel pump and fitted it today, but the results are no different. It runs good as long as I pour petrol down the carburetor. As soon as the fuel runs out, the motor quits. The flexible fuel line is clear, as I can low through it, however, it is rather stiff? can anyone give me any suggestions on how to get it running?