audia4free

Hi I bought a 2002 Audi A4 and the problem was or I thought it was the fuel pump that it was stuck, so I bought a new pump but the tank was full of sludge not full but only parts of it, so I took off the suspension and the tank, clean it up, and then I place everything back again. I forgot to mention that when I bought the car it didn't have any ignition coils, so I bought new ones and put them on also. Today after like a month dealing with the car, I finally manage to put everything back together and guess what?? the car doesn't start, the pump makes its distinctive sound of sucking up, or at least that's what I think and the car just basically cranks as if it was gonna start but it doesn't start at all it just keeps cranking.

PLEASE what can I do???? I thought I was close to repair the car and now I am stuck with this and I feel like crap...