1Lazy40

Hello zilvia my name is torey i have had my 91 240sx super hicas for about a year now, with onl1 1 prob it would smoke a little from time to time and that it would run funny after inwould drive it fast. It would idle funny and sound like a wrx, i think it was an injector prob, but other then that it would drive fine , but the other night after driving it for about 20 min , and then turning it off , it wouldent trun back on , it starts and runs fror about 2 sec then shuts off, i looked over my fuses and i noticed my fuel pump fuse was blown so i replaced it , but still had the same prob , i then removed the fuel pume it self it looked ok, i wired it to the battery to it seem to be working fine , i have no idea why it wont run , anyone else had this prob or know what it could be ?