1993 Saturn SL2 SL2 Fuel issues

I have a 1993 Saturn SL2 DOHC, 1.4L. We have changed everything in the fuel system area but the fuel regulator and the fuel pump. I can not start the car by just turning the key, I do hear the fuel pump in gauge when you turn the key, but it sounds like it is getting too much gas and that is what it smells like also. I have to put my foot on the gas pedal to crank the car and it spits and sputters and it will hesitate when you give it gas (almost die) and it will do the same when you put it in reverse also. The hesitation does not happen all the time, but it does happen quite frequently. My car runs really good when you are driving it for a while, but you still have to place your foot on the pedal for it to start and there is also some black smoke coming from the exhaust when it is finally cranked but it does go away.