wsanders

I have a 91 S10 with a 4.3 litre that was running fine until saturday. It started and after it was put in drive it died and wont start back up. it looks like its not getting enough fuel so I changed the fuel filter. The fuel pump is only a yr or so old. After changing the fuel filter it still wont start. I tryed using starting fluid and it still wont start. Any suggestions or trouble shooting tips would be greatly appreciated. I dont have the money to keep guessing and changing parts. Thanks