Mercedes Benz repair: car wont run, fuel pressure regulator, car spearkers

Question
I have a 98 c230 bacis model.My car wouldnt start. I changed out the fuel pump, fuel filter, relay and k40 fuse. It atarts and then dies like it runs out of gas. You can put gas in carb it runs for a few seconds. It seems like it not getting any gas. I even got anither fuel pump and tried it. Unhooked line to injector no gas at one of the injectors. Help Help

Answer
check to see if your pump is powering up jump your FPR switch Fuel pressure relay #87 and 30 I believe or may be #20 anyways it is the one right behind the 87 towards the firewall use a small guage wire like for car spearkers. You will hear a buzzing sound when jumped your fuel will continue to run to your car (google fuel pressure relay to find where yours is it will say climate or something like that youll find where it is. Also check your OVP relay it will have a 10 amp fuse on it make sure it is not burnt out. Try starting car with your fuel pump relay jumped . If it doesnt start then your Fuel pressure regulator is bad It is on the fuel rail silver looking thing . That delivers fuel to the injectors clean it out etc. Check out those first and if you cant get it to start then your crank sensor is shot but I am sure besides a overly clogged fuel filter it should start.