Blown EGR cooler on a Mercedes MBE 4000 engine?

Discussion in 'Freightliner Forum' started by ichudov, Mar 9, 2018.

  1. ichudov

    ichudov Heavy Load Member

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    Mar 14, 2012
    Berkeley, IL
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    I have a truck that failed on the highway, emitting huge amount of white smoke. I picked it up with my lowboy and brought it back to my shop.

    Here's what I observed:

    1) Huge amount of white smoke on highway, especially when I pushed on gas
    2) Antifreeze leaked out onto the hot turbo, resulting in white smoke
    3) Bubbles in reservoir
    4) The EGR cooler line was blown open near where the "membrane" was connecting that line to the line going to the engine block
    5) When I pushed gas pedal I heard knocking type sounds like exhaust gas was leaking before the muffler would quiet it.

    Anyhow. I guess the question is what to do and whether we can fix it and also whether we can fix the right things and not the wrong things.

    What I am afraid of is that

    1) EGR cooler failed because of something specific, some other problem,
    and not just from age
    2) Maybe bad EGR cooler caused some other problems needing to be diagnosed?

    any ideas?

    thanks!
    20180309_081611.jpg

    20180309_081611.jpg
     
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  3. KonzaDeliveries

    KonzaDeliveries Bobtail Member

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    Apr 28, 2018
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    What did you find out on this? I have an '06 Mercedes OM460LA engine with EGR problems.
     
  4. ichudov

    ichudov Heavy Load Member

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    Berkeley, IL
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    It was a blown head gasket do to a broken head bolt. I found someone who could fix it for a reasonable amount.
     
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  5. KonzaDeliveries

    KonzaDeliveries Bobtail Member

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    Apr 28, 2018
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    Good deal! Do you have any experience with an EGR-delete on that motor?
     
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  6. ichudov

    ichudov Heavy Load Member

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    Mar 14, 2012
    Berkeley, IL
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    I have no such experience whatsoever. But a good question.
     
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  7. KonzaDeliveries

    KonzaDeliveries Bobtail Member

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    Apr 28, 2018
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    For those looking for tuning info, contact Diesel Spec Inc in Canada. They have dealers throughout the US and Canada.
     
    Last edited: Dec 29, 2018
  8. nikmirbre

    nikmirbre Road Train Member

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    Jul 27, 2011
    High Point NC
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    I know a guy in Atlanta...... we prefer the word “tuned” on the forum.... not “delete”.
     
  9. KonzaDeliveries

    KonzaDeliveries Bobtail Member

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    Apr 28, 2018
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    You're very right. Oops.
     
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  10. saeed

    saeed Bobtail Member

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    Feb 19, 2022
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    2007 M2 Mercedes engine replaced aftermarket cooler last months due to white smoke and leaking coolant leaking into the exhaust, EGR cooler last only 4 weeks 4 k miles and same problem anyone can help, or anyone has done Tuned on this engine
     
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