Please help

I have a scirocco that I cannot get to start. At first I thought it was a fuel pump but then I jumped the relay and then the pump worked fine but the car still would not start. Then I figured it was the relay, I bought two new ones, and it still did not work. I have traced all of the wiring connections to their origins and all the wiring seems to be good. I am totally stuck. The fuel pump does run for a few seconds when I turn the ignition key halfway and then it stop. The car will not fire as it seems that I have no spark to the spark plugs. I have replaced plug wires, coil, fuel regulator, fuel unit. I am just totally lost, I do not know where to look. If anyone has any suggestions please help.