I replaced my factory fuel pump with an Airtex E8312 fuel pump I got from AutoZone. The pumps fits perfect but now I'm having idle problems. I have tried to make adjustments by adjusting the distributor and adjusting the idle adjust screw. Neither works. The car runs but black smoke is coming from the exhaust which (to me) seems as though too much fuel is being pumped.

Can anyone tell what I can do to solve this?