Black death

Discussion in 'General Discussion' started by holbay, May 15, 2016.

  1. holbay

    holbay Hardcore MB Enthusiast

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    [​IMG][/URL][/IMG]

    [​IMG]

    This is a Mercedes sprinter with 122,000 miles on it. And the owner said he could not smell anything wrong trust me it stank of burning diesel from 20 feet away and surprisingly there was no usual chuffing noise from it. But definitely the worst black death I have seen.
     
  2. markjay

    markjay MB Club Veteran

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  3. StuartK

    StuartK Hardcore MB Enthusiast

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    What causes this?
     
  4. bob6600

    bob6600 MB Club Veteran

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    Failed injector seals. To get this bad it has been left a long time
     
  5. StuartK

    StuartK Hardcore MB Enthusiast

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    Never seen it before.
     
  6. John

    John MB Club Veteran

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    I wish.
    Is it possible to sort by cleaning and replacing the injector seals or is it fooked?
     
  7. markjay

    markjay MB Club Veteran

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    I thought it was caused mainly by poor quality engine oil and/or infrequent oil changes?
     
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  8. OP
    OP
    holbay

    holbay Hardcore MB Enthusiast

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    This was caused by failed injector seals the injectors will be getting pulled out and possibly the seats in the cylinder head may need recutting. The carbon muck you can see was rock hard and a screwdriver had to be hammered into it to make it break up to remove it...
     
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  9. Philip1972

    Philip1972 Hardcore MB Enthusiast

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    Mine looks a bit like that, although perhaps not quite as bad.

    Had a "black death" guy look at it (an injector specialist) and he said mine wasnt chuffing as all the crap has resealed itself lol. Recommended leaving it on mine until the injectors failed.

    Mine doesnt smell much...only a tiny wiff every now and then.
     
  10. bob6600

    bob6600 MB Club Veteran

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    EDIT: Duplicate post
     
    Last edited: May 16, 2016
  11. bob6600

    bob6600 MB Club Veteran

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    I thought you was being sarcastic as there have been numerous threads on this. This is a severe case and being on diesel engines may be why you may not have paid too much attention to it.

    Catch it early and it's not too bad. At this stage, the best the OP can do it remove as much of the deposits as possible to save labour costs, unless he is doing it himself

    Yes - can be sorted with new seals.

    Really? It will only get worse and bear in mind when the engine gets hot it becomes hot and tar-like so it could 'unseal' itself or just build up until it looks like the OP :)

    The earlier you catch it, the easier it is to do. My advice would be get it done
     
    Last edited: May 16, 2016
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  12. StuartK

    StuartK Hardcore MB Enthusiast

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    Hiya only reason it caught my eye is my dad runs sprinters at work and to very high miles too. My brothers has done over 300k from memory no issues. I'll be sure to warn them of this though.
     
  13. bob6600

    bob6600 MB Club Veteran

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    As long as they keep an eye (or nose) for any diesel fumes in the cab and check under the engine covers every month or so they will be fine and catch it early if it happens. You should hear it chuffing in most cases

    The 'ticking' noise in this video is what to listen for, a lot more obvious when you hear it as the sound quality isn't the best but you can even see it at around 13 seconds

    [YOUTUBE HD]DrB6jXeyfdE[/YOUTUBE HD]
     
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  14. Shala

    Shala Hardcore MB Enthusiast

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    When I read Black Death I thought someone was talking of Game of Thrones, but "I Know Nothing" )
     
  15. bob6600

    bob6600 MB Club Veteran

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