54 GMC 150 was a hard start last weekend when I got it but would run and drive. It did have frequent stalling at low rpms. Fuel filter that was installed by the PO was in the fuel line between the pump and carburetor. It was extremely dirty. Replaced it today thinking this could be my hard start issues. Now it is a no start issue. No fuel in the fuel filter whatsoever. Fuel pump looks like it was replaced "recently" (doesn't mean it's not still bad). Also read on here about trash in the tank. Removed gas line from tank side of the fuel pump and blew compressed air back into the tank. Reconnected and still no fuel in the fuel filter. Am I to assume that a bad pump is the culprit? Is there something I'm missing?