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Mercedes C220CDI Not starting Help please

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by batchy, Sep 11, 2017.

  1. batchy

    batchy New Member

    Messages:
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    Joined:
    Aug 18, 2017
    Your Mercedes:
    c220 cdi estate 2001
    Hi All

    I have recently had an issue when the car would crank but not start. It had a quarter of a tank. I put some fuel in and it spluttered into life. I have kept the car topped up with fuel since and all was fine. Today after being sat up for 12 hours it started then died. Then wouldnt restart it has 3/4 of a tank.

    After about 20 seconds of cranking it started. I have read alot about the high pressure pump which i believe is the culprut. There is fuel to the filter which is fairly new and no air bubbles iin the fuel line injecgors are fine etc, however i noticed the clear pipe under the high pressure pump was half full of fuel so i believe i have a leak back on it.

    Has anyone else had this problem and is it a case of changing the pump? or os there an easy fixl? it isnt leaking fuel. I go away on friday for two weeks so the car will be sat at the airport so need to fix it before !!

    thanks all i have attached a picture showing the pipe that was half full to the left of the black line to the right was empty.
     

    Attached Files:

  2. Paul1948

    Paul1948 Senior Member

    Messages:
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    Joined:
    Sep 18, 2014
    Location:
    Bournemouth
    Your Mercedes:
    S320 CDI 2003
    Take a can of Easy Start with you as it sounds as though you have pressure leak of from the common rail, possible a faulty injector or seals failing in the fuel line ( letting air in but not fuel out). Enjoy your holiday.
     
  3. turbopete

    turbopete Senior Member

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    Joined:
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    Location:
    Spennymoor
    Your Mercedes:
    2010 '60' Ford Mondeo 2.0TDCi Zetec (sorry)
  4. OP
    batchy

    batchy New Member

    Messages:
    6
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    Joined:
    Aug 18, 2017
    Your Mercedes:
    c220 cdi estate 2001
    Great thanks guys will take easy start with me and have a look when I'm back.! Will a pressure test be the best way for injectors? Whereabouts are the seals to check.? Presume the seals are the cheapest easiest place to start! ?
     
  5. v8disco

    v8disco Active Member

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    Joined:
    Aug 24, 2006
    Location:
    Woking, Surrey
    Your Mercedes:
    2012 CLS 350 cdi Blue efficiency
    When I had a couple of D5 volvos, the early models were notorious for this and it was usually a failed injector that caused it. The way to test the injectors was to, one at a time, remove the leak off tubes and run the engine. If you got virtually no leak off, it was fine, but a jet of fuel indicated it was faulty. Change the injector and all was good. Various people suggested that they should be coded to the car, but I bought a new Bosch unit and it just worked. Apparently a lot of leak off means the rail takes a time to build the pressure needed for the engine to start. Might be nothing to do with your problem but thought I would share anyway .


    Sent from my iPad using Tapatalk
     
  6. turbopete

    turbopete Senior Member

    Messages:
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    Joined:
    Feb 4, 2009
    Location:
    Spennymoor
    Your Mercedes:
    2010 '60' Ford Mondeo 2.0TDCi Zetec (sorry)
    seals are commonest on these. basically all the rubber o rings on the pipe unions etc.
     
    oigle likes this.
  7. Steve@Avantgarde

    Steve@Avantgarde Forum Supporter Authorised Forum Supporter

    Messages:
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    Joined:
    Dec 8, 2009
    Location:
    Bristol/Somerset
    Your Mercedes:
    Mercedes-Benz C32AMG, SL55AMG, C320CDI Sport Edition Estate and SLR McLaren Coupe Roadster.
    Always check the fuel pressure first.
     

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