1989 Chevy S-10 Truck fuel problem

My truck started rather suddenly not being able to stay running. It actually went dead while I was running it to keep the battery charged. I changed
the plugs, wires and fuel filter. While I had the filter disconnected from line I turned the key on to see if the pump was working. Fuel diid pump out of line but I not sure if the pressures were right. If I put gas in the carburetor it will run only until the gas burns up. Are there any other filters or vacuum lines that could be giving me problems? Any tips?