1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. Dear Guest, Official Club stickers are now available, if you have not already ordered some go grab them now! To order click this Link ----> CLICK ME Go get them whilst stocks last! To dismiss this notice click the cross to the right of this message.

ML270 Problem starting up and Judder

Discussion in 'Engine' started by rexmundo, Feb 23, 2016.

  1. rexmundo

    rexmundo New Member

    Messages:
    1
    Joined:
    Feb 23, 2016
    Car:
    ML270
    Hi, got a problem with my other half's Ml270 and would appreciate some help.

    All of a sudden couple of days ago it wouldn't start in the morning. Well it starts fine but cuts out after 4-5 seconds. I managed to get it going by taking it straight to high revs but when in low speed/idle it judders and makes funny squeeky noise. Took it to garage and they changed EGR. But it didn't fix anything. Did it again next morning.

    Thinking of changing manifold but thats a 1k job and don't want to do it for nothing. There are no other error codes other than the EGR error code.

    Anyone has ideas on what could be wrong?
     
  2. mersum1es

    mersum1es Hardcore MB Enthusiast

    Messages:
    989
    Joined:
    Aug 9, 2012
    Location:
    Finland
    Car:
    W220, W210
    Usually these are fuel related problems... air draw, injector leak, pressure control valve...

    But, you say EGR fault is still there? Read by star device?

    Check EGR vacuum control device (you may swap it with similar turbo controller, follow vacuum lines from EGR and turbo actuators, slightly larger than match box...). Also EGR fault may be triggered other fault in boost line (a leak somewhere like boots pipes, cooler) or turbo fault (see if turbo control arm moves when revving stationary).
     
  3. MOZ

    MOZ Hardcore MB Enthusiast

    Messages:
    147
    Joined:
    Sep 3, 2014
    Location:
    Knaresborough,North Yorks
    Car:
    W163 ML270 Inspiration, Leon Cupra TDI
    +1 for potential fueling issue, very common on these. Air gets into the fuel lines and can take a lot of cranking to start and sometimes cuts out after starting dependent on leak.
    Do a search for ml270 fuel lines or poor starting, there will be loads of info ( could do a search on my posts as I've posted a lot in this issue ) worth looking at and trying( a few quid less than £10 for o rings which may be all you need, or £30 to £50 worth of new fuel lines( merc parts moulded) before looking at inlet manifold for 1k.
     
  4. osbournedwight

    osbournedwight New Member

    Messages:
    6
    Joined:
    Dec 2, 2016
    Car:
    ml 270 cdi 02
    My ml 270 cdi don't want to start up in the morning i install a feul pump and it still doesn't fix my problem i have to put my foot and the gas pedal to get it to start up can anyone tell me what is going on with it please my name is dwight ta

    Sent from my SM-N9005 using Tapatalk
     
  5. 91dm

    91dm Hardcore MB Enthusiast

    Messages:
    564
    Joined:
    Oct 6, 2010
    Location:
    Lancs
    Car:
    C250TD Sport
    Did you change the seals in the low pressure pump?

    Does it idle ok when started?
     
  6. piet-venter

    piet-venter New Member

    Messages:
    5
    Joined:
    Apr 17, 2017
    Car:
    2003 Mercedes-Benz C 270 CDI
    I had the same on mine. One of the plugs on top of the injector kept coming loose. I tighten it an never had the problem again.

    Sent from my E6653 using Tapatalk
     
  7. piet-venter

    piet-venter New Member

    Messages:
    5
    Joined:
    Apr 17, 2017
    Car:
    2003 Mercedes-Benz C 270 CDI
    My car also just cut out while driving then won't start again. After tightening the plug on the injectors never had the problem again

    Sent from my E6653 using Tapatalk
     
  8. JohnDavies

    JohnDavies Hardcore MB Enthusiast

    Messages:
    122
    Joined:
    Feb 28, 2017
    Location:
    Ripon, N. Yorkshire
    Car:
    ML270cdti & C200 Coupe
    Had the same problem as the threadstarter.
    1/ I had a cracked washer on one injector so changed them all. (washers not injectors)
    2/ Changed all the fuel line 'O' rings incl. the pump

    I have had no problems since.

    Note: When the work is completed make sure your Batt. is fully charged to pull the fuel up.
     
  9. JohnDavies

    JohnDavies Hardcore MB Enthusiast

    Messages:
    122
    Joined:
    Feb 28, 2017
    Location:
    Ripon, N. Yorkshire
    Car:
    ML270cdti & C200 Coupe

    I should have put, changed all the fuel line 'O' rings incl. the pump 'O' rings. ( not change the pump). Apologies for any confusion.:wallbash:
     

Share This Page