Actually most if not all have a strainer screen or sock over the fuel line within the fuel tank. Want confusion? Have debri such as leaves, paper, etc. drifting around in the tank and after a while the engine starts to starve for fuel. After the engine dies or is shut off the garbage falls off and drifts away leaving the strainer and the cycle of confusion repeats. Replace the fuel filter and next the fuel pump, same thing! Next let's replace the rubber fuel lines because maybe one is collapsing or restricted and after blaming the carburator finally lets look inside the fuel tank after throwing parts at the car that weren't needed. Combine this with shop labour as well if the mechanic doesn't think outside the box.
C56K3391
Two-Tone 05/16
1950 Mercury Sedan