I have a new fuel pump but my car still wont start why ?

What makes you think its was the fuel pump in the first place .
What about the spark /and the plugs/and the coils/and can you hear your fuel pump working when you turn on the ign key,can you hear a motor running in the fuel tank, if not then take off the feed pipe to the engine and get someone to turn on the key and petrol should come out ,if not either the pump isent pumping owing to no power to pump /fues/broken wire to pump/or fuel filter needs replacing .
If you can hear the pump and fuel comes out the pipe from the tank .and the injectors are ok then check out the plugs for spark/ take out 1 plug and put it in the pluglead and lay it on the engine and spin it over if a good blue spark then you have no problems with that side of it
but it will be 1 of the 3 things.. Let me know how you get on Ron