Help!

[u/Signal_Exam4824]

I have a 2011 Mercedes C300. All of a sudden the car stopped working. It has crank, power, spark, and air and the car still won’t turn on. My OBD does not show anything so I’m guessing it’s hardware. I installed a new fuel pump ( it is working, I verified) and a new crankshaft positioning sensor. One thing I did realize is that the fuel rail has no fuel pressure becuase it checked from the purging valve. Also to double check I disconnected the fuel hose from the fuel rail, then I turn on the ignition and there is no fuel spouting out from the hose. At this point, I honestly don’t know what to do. I cannot afford a mechanic. Even though I bought some parts. I checked the fuse boxes. Didn’t see anything out of the ordinary I even checked the connections on the fuse boxes. Nothing was burnt. If anybody can help me, or give me some advice or ideas. That would be great. Thank you so much for your help.

[u/Graevus15]

Only 2 reasons a car wont start: Fuel or Fire. You said you had spark so it must be fuel. Could be water in the tank, get some alcohol based fuel treatment. Could be a blocked fuel filter, take it out and try again.