2004 Kia Optima will not start

I HAVE A 2004 KIA OPTIMA, REPLACED TIMING BELT AND TWO SENSORS IN THE FRONT OF THE ENGINE MECHANIC SAID THAT CAR WOULD NOT START, UNLESS HE FED THE FUEL TO IT. I REPLACED THE FUEL PUMP BECAUSE IT DID NOT SEEM TO BE PUTTING OUT MUCH PRESSURE, NEW FUEL PUMP IS DOING THE SAME THING, AND CAR WILL NOT START. IT SEEMS TO ME THAT THE CAR IS NOT GETTING THE FUEL DELIVERY PLEASE HELP NO ONE CAN SEEM TO FIGURE IT OUT