new fuel pump @ filter , got spark , no start on 1991 Cadillac Seville

thought old pump was problem replaced worked for a week and now no start again, i replaced fuel filter too! fuse that controls fuel gauge was blown relaced and no start still the fuse did not blow again, please help?

Are you getting fuel pressure to the injectors?
What type of part did you use? Some of the inexpensive parts can be very problematic.