Have Mercedes Questions? Ask a Mechanic for Answers ASAP
Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.In order for the engine to start and run you need good spark to all the spark plugs, injector pulse, proper fuel pressure and good compression. If you can check each one of these things and post back with which one you are lacking I will try and help you get this resolved.
If the pump is running and producing proper pressure and you have injector pulse it really should run, I have not seen any issues with collapsed fuel lines. The injector are ground switch on and off by the PCM (computer) , go back and recheck your fuel pressure as well as the injector pulse.