1998 C230 Hesitation/Fuel Issue
 

1998 C230, battery initially died and was replaced yesterday. I now have rough starting issues (need to push down accelerator to get the car started). Also, hesitation issues when attempting to accelerate, tach is going up, although it feels as if the engine is not getting enough fuel, jerking hesitation. Mercedes Benz technician (roadside assistance) checked the fuel pump yesterday as well and stated it was fine, he fiddled with the fuses as well.
Any ideas as to what the problem is ? Fuel injectors ? Fuel filter ?
Computer ? Car has 46,000 miles on it now.