Tried numerous parts and I am now going to return the good parts.
Very well could be the fuel pressure rgulator but I am not going to buy one to just trouble shoot with.
OVP is good cold start valve is good fuel pumps and filter ok fuel pump relay ok.
Going to take it to a STAR mercedes machanic to diagnose the problem.
Vehicle is even harder to start now do not want to burn out the starter trying to start it anymore.
Did drive it last week it took several cranks to start it. While pumping the gas.
Drove it around drove fine. Also started fine when it was warm. Now every new part I have tried has not worked.
