WELLLLLLL, this car doesn't have a carb. It is an SE, the E stands for injection.
You should check the operation of the fuel pump relay and the switching mechanism...I would take off both of the wires from the fuel pump and put power to it. If the car runs, you have a problem in the fuel pump controll circuit.
ASE CERTIFIED MASTER AUTO TECHNICIAN
MERCEDES SPECIALIST 11 YRS