My 1992 Chevy S-10 V6 2.8 engine

My car broke down recently, it will crank but not run, a friend took a look at it and put gas directly into the caberator I turned the key then the car sounded like at wanted to start, then the losened the "main" fuel line and told me that if I turn the key fuel should come out, I turned the key and nothing. So he figured it was the fuel pump and or fuel filter, I went and bought both and changed the fuel pump and fuel filter, but still nothing, I then bought one fuel pump relay switch, there looks like theirs two of them but I bought one, but when I replaced the fuel pump relay the car still cranked up but did not start at all, what else can be the problem?