1992 Other Subaru Models Car won't run, not fuel pump

My car died last night on a dark country road. No sputter, no warning. It was not in excellent running condition before, but was RUNNING. Gas was low, put more gas in, fuel pump turns on, battery is fine. Motor turns over but wont fire. Just replaced all spark plugs, dist cap/wires/rotor and fuel filter (all after it died) If I hear the fuel pump hum when I turn the key could it still be toast. I don't really want to buy a new one for $300 if its not the issue. Thanks for your help.