hi everyone ,

my Merc E320 engine doesn't start , the engine cranking but not start up ,when i checked the fuel at fuel rail there is no pressure then i found the fuel pump doesn't work because no electricity goes to the pump (i could start the pump manually by tricky connection and i did make sure the pump itself is ok ) also i found no spark and no electricity goes to ignition coils .

i need to know how i can make sure there is electricty goes to the ECU ,and also how i can test the crankshaft sensor without removing it ?

thanks in advance

ABushweigir

 

I needed a new fuel pump, my gas gauge started acting funny telling me I had no gas when i did and acting like i was out of gas all the time. So after I got the pump, a few months later needed a fuel pump relay. It worked fine ever since but i have had to replace the fuel pump like three times in 8 years due to cheap gas and not using premium. It matters. If that's not the issue... Then check ur starter. And make sure ur battery is fully charged before starting the vehicle.good luck.