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.

W163 ML270 CDi Cold Start Problem

Discussion in 'Engine' started by Stuie, Jan 7, 2010.

  1. Stuie

    Stuie Member

    Messages:
    38
    Joined:
    Nov 14, 2006
    Location:
    York
    Car:
    2005 SLK 350
    Hi all
    Having a problem starting in the cold. Changed the heater plugs beginning of December so its not that. However the heater plug light on the dashboard stays on a while when its this cold once its started. Went out to it this morning and it turned for ages (plenty of juice in the battery) but would not fire. Had to leave it with the battery on charge. Its not the first time its done it recently. Seems directly linked to how cold it is as once we get a warmer day and i've re charged the battery it fires.
     
  2. wemorgan

    wemorgan Hardcore MB Enthusiast

    Messages:
    8,118
    Joined:
    Apr 5, 2008
    Car:
    A205 C220d
    Last edited: Jan 7, 2010
  3. OP
    OP
    Stuie

    Stuie Member

    Messages:
    38
    Joined:
    Nov 14, 2006
    Location:
    York
    Car:
    2005 SLK 350
    Slight progerss

    Ok, the plot thickens. It won't start with easy start. The alternator is giving full charge. If i put a booster on the battery it will start but while the temperature is this cold the glow plug warning light stays on for a fair while after it fires. Even though the plugs are new.
     
  4. AndyPCD

    AndyPCD Registered User

    Messages:
    1,068
    Joined:
    Jul 19, 2009
    Location:
    Watford
    Car:
    C250 cdi amg sport plus
    Hi

    I would be inclined to say the seals on the plastic pipes are allowing the fuel system to suck in air this is why it doesnt start
     
  5. Stratman

    Stratman Hardcore MB Enthusiast

    Messages:
    3,869
    Joined:
    Jun 15, 2003
    Location:
    Sunbury
    Car:
    W203 C200 CDI '04Estate
    I'm thinking your battery is on the way out. That would also account for the glow plug light staying on as they're not getting up to temperature.

    If you can, have the battery load tested when it's really cold.
     
  6. OP
    OP
    Stuie

    Stuie Member

    Messages:
    38
    Joined:
    Nov 14, 2006
    Location:
    York
    Car:
    2005 SLK 350
    It is the original MB battery, so its 6/7 years old. I'll try and get it load tested.
     
  7. alexmoon

    alexmoon Hardcore MB Enthusiast

    Messages:
    111
    Joined:
    Nov 2, 2009
    Location:
    Dumbarton
    Car:
    W211 270CDi
    Stuie, check my thread below as we could have a similar issue. "When temp goes below zero my 270CDi won't start in the morning. In past two weks I have had both batteries replaced, the thermostat, and glow plugs. If temp is zero or above it starts first time in morning. If it gets to minus two or below it won't start. There is plenty of life in batt and starter motor cranks strongly even in sub zero. I should add that it fires up with Easy Start. Have now spent £600 in two weeks to solve this problem but back to square one! Common denominator is it doesn't like sub zero temps. Once started it runs beautifully and will fire up very easily for rest of day. At my wits' end now! Any help much appreciated, bearing in mind that problem only occurs at sub zero."
    Note the cash I've spent to no avail. Beware!
     
  8. AndyPCD

    AndyPCD Registered User

    Messages:
    1,068
    Joined:
    Jul 19, 2009
    Location:
    Watford
    Car:
    C250 cdi amg sport plus
    I cant see it being the battery as if the battery were weak it would turn over slowly and then die.

    i would go for the seals another guy on here has the same car and had his none starting and he has had the seals replaced and its fine now and cost him £50 all in to have them done
     
  9. OP
    OP
    Stuie

    Stuie Member

    Messages:
    38
    Joined:
    Nov 14, 2006
    Location:
    York
    Car:
    2005 SLK 350
    No Fault Registered

    Have just checked for faults on diagnostic. Nothing registered.

    Are we talking about replacing the fuel injector seals?

    I loosened the fuel pipes and the fuel is only dribbling out rather than spraying out as it should on turnover.

    Still thinking its a battery issue, cos if the battery is not in peak condition, it's not powering the hi pressure fuel pump adequately to make it fire.
     
  10. AndyPCD

    AndyPCD Registered User

    Messages:
    1,068
    Joined:
    Jul 19, 2009
    Location:
    Watford
    Car:
    C250 cdi amg sport plus
    One thing would be to check the actual value of the fuel system while cranking it.

    No the small plastic fuel pipes have rubber seals on them and they perish.

    But the high pressure pump is mechanical and has no electrical feeds to make it run its is run by the engine turning over
     
  11. OP
    OP
    Stuie

    Stuie Member

    Messages:
    38
    Joined:
    Nov 14, 2006
    Location:
    York
    Car:
    2005 SLK 350
    OK Willow. Thanks for that.
     
  12. corned

    corned Hardcore MB Enthusiast

    Messages:
    3,894
    Joined:
    May 2, 2008
    Location:
    Living in error with Maude at Cap Ferrat
    Car:
    car
    OK I know this isn't a really helpful post, but is anyone else here rather surprised at (or has anyone else noticed) how many 270CDIs are not seemingly able to cope with the current conditions? Or is it mere coincidence?

    There seem to be a lot of posts/threads relating to non-starting 270CDIs on here...
     
  13. AndyPCD

    AndyPCD Registered User

    Messages:
    1,068
    Joined:
    Jul 19, 2009
    Location:
    Watford
    Car:
    C250 cdi amg sport plus
    To me i think it is a coincidence i think these engines are just coming to that age where certain things will start to go wrong and the cold weather is just highlighting the situation at the moment
     
  14. scorps

    scorps New Member

    Messages:
    1
    Joined:
    Jan 9, 2010
    ml270 cold starting

    Same problem here on my 2000 ml only happened since the cold snap !
     
  15. pugmerc

    pugmerc New Member

    Messages:
    21
    Joined:
    Jan 9, 2010
    Hi - having the same issue with a 320CDI auto estate - wont start and battery goes dead even though brand new and high capacity - did start when engine covered in a blanket under the bonnet but took it off when car in the garage and left for a couple of days - wont now start so battery on overnight charge and waiting for anyone with photo's of fuel pipe seal locations so can warm with hairdryer to test that theory of cold seals !! Anyone who can help ???

    Thanks
     
  16. Doosh1

    Doosh1 Member

    Messages:
    38
    Joined:
    Jan 10, 2010
    Location:
    Northants
    Car:
    X5 - ML270
    Have a quick look to see if you have air in the fuel line when cranking (When its struggling to start) May take 2 of you to do this. Easiest place is from the fuel filter to the pump under the plastic engine cover. Just bought a non starting 2002 ML270CDI which has had loads of major components change for poor starting and turned out to be fuel line O rings! Took a days fault finding to find it though.. Cold weather certainly exagerates the problem.

    certainly sounds fuel related as any otehr problems are recorded in the diagnostics.
     
  17. Rory

    Rory Hardcore MB Enthusiast

    Messages:
    6,958
    Joined:
    Mar 12, 2005
    Location:
    Cheshire, UK
    Car:
    C270CDi Estate (2004 facelift model)
    I haven't run mine for a few weeks but need to use it this week so yesterday I broke though the snow and ice and got in.

    It was a little sluggish to turn over but started more or less instantly.
     
  18. E300dave

    E300dave Hardcore MB Enthusiast

    Messages:
    174
    Joined:
    Aug 2, 2006
    hi all was gonna say the same as above didnt start my ml since dec 28 started this morning straight away ....
     
  19. Nealenet

    Nealenet New Member

    Messages:
    2
    Joined:
    Jan 25, 2010
    Location:
    Brighton
    Car:
    ML 270CDi CLK200 Conv
    ML 270CDI cold starting woes

    I'm new to this forum but I was searching for some answers to my ML's starting issues. Since the cold weather hit my ML has refused to start several times. Mine is an 02 version and has just gone over 100k. The first time I called the AA and they diagnosed a fuell leak which had damaged the timing belt. Ihad just had the car serviced at a main dealer so I was a bit cheesed off that this hadn't been picked up. Cost me £900 in new bits. I also had an issue with the gear box refusing to change out of first gear. This corrected it self if you switched off the engine and restarted. Two weeks later and I still have starting issues from cold and still a temperamental gear box. Merc want £1500 to replace an electro-hydraulic shifter in the gearbox and fit a new battery.

    I now have no confidence in the dealer to get to the bottom of this issue and i am going back to John Haynes a Merc specialist in Worthing. But I am going to get him to check the fuel pipes and seals first.

    Sorry to go on so long.:(
     
  20. A GORDON

    A GORDON New Member

    Messages:
    2
    Joined:
    Jan 31, 2010
    Location:
    UK
    Car:
    ML270CDI, SLK320
    Ml270cdi

    I too have recently also been having intermittent reluctant starting issues with my year 2000 ML270CDI.
    Recently, especially from a cold start, or if the car has been running for some time and has got quite hot, engine will turn on start, fire up after a few seconds, then immediately stall!!
    When this happens, it will require a significant churn for 20 seconds, before it shows any sign of ignition, and sometimes does not at all, and will have to be left for some time, before a re-start has any effect!!!
    Very frustrating, because when the fault appears, first start nearly always works, and then stalls almost immediately!! It's after this point that re-start proves very difficult!!
    Any suggestions / advise from sufferers with similar experiences?!
    Thanks
     

Share This Page