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MBE4000 Boost

Discussion in 'Trucks [ Eighteen Wheelers ]' started by sergk1989, May 30, 2016.

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  1. May 30, 2016 #1
    sergk1989

    sergk1989 Bobtail Member

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    Jan 23, 2013
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    How much boost are you guys pushing on your mbe4000?
    I get about 22-23 psi. Is that normal or do I got a leak somewhere?
     
    sergk1989, May 30, 2016
    sergk1989, May 30, 2016
    #1
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  3. May 30, 2016 #2
    swaan

    swaan Road Train Member

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    BC canada
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    Big POWWWWWA!!! Lol

    sounds about right .
     
    swaan, May 30, 2016
    swaan, May 30, 2016
    #2
  4. May 30, 2016 #3
    sergk1989

    sergk1989 Bobtail Member

    39
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    Jan 23, 2013
    0
    oh you got that right!!!

    going up I26 from NC to TN about 13K LBS Im going about 27MPH. The Detroit I had in my volvo boosted up to 30PSI
     
    Last edited: May 30, 2016
    sergk1989, May 30, 2016
    sergk1989, May 30, 2016
    #3
  5. Jun 1, 2016 #4
    Pablo-UA

    Pablo-UA Road Train Member

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    Borispol, Ukraine
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    Maximum boost of OM460 is 30 PSI. Over 30 psi it throws overboost fault code
     
    Pablo-UA, Jun 1, 2016
    Pablo-UA, Jun 1, 2016
    #4
    25(2)+2 Thanks this.
  7. Jun 2, 2016 #5
    sergk1989

    sergk1989 Bobtail Member

    39
    10
    Jan 23, 2013
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    So I am leaking boost somewhere?
     
    sergk1989, Jun 2, 2016
    sergk1989, Jun 2, 2016
    #5
  8. Jun 3, 2016 #6
    Pablo-UA

    Pablo-UA Road Train Member

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    Borispol, Ukraine
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    MBE got closet crankcase vent system and if u have leak - u can see some oil there.

    But low boost may be related with exaustm manifold leak ore stuck turbo brake ore reed valves, egr (Euro-III/EPA 2002 engines), clogged DPF....
     
    Pablo-UA, Jun 3, 2016
    Pablo-UA, Jun 3, 2016
    #6
    sergk1989 and toss009 Thank this.
  9. Jun 3, 2016 #7
    sergk1989

    sergk1989 Bobtail Member

    39
    10
    Jan 23, 2013
    0
    I will be taking a look at the egr system, I have a feeling it's the problem.
    It got worse today, I was going up the mountains with a heavy load and now only 19 psi, couple times it went up to 21psi and you feel it, then after a second back down to 19.

    How can I bypass the egr completely? Can I just unplug the egr valve connector when the engine is cold?
     
    sergk1989, Jun 3, 2016
    sergk1989, Jun 3, 2016
    #7
  10. Jun 4, 2016 #8
    Pablo-UA

    Pablo-UA Road Train Member

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    Borispol, Ukraine
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    to do it u have to reflash ECU, but.... DDCT cant do it. I have to take apart ECM, remove flash memory (AM20F400BB) and reprogram it on bench.

    I have Mercedes Star Diagnose to work on MBE engines.
     
    Pablo-UA, Jun 4, 2016
    Pablo-UA, Jun 4, 2016
    #8
  11. Jun 5, 2016 #9
    sergk1989

    sergk1989 Bobtail Member

    39
    10
    Jan 23, 2013
    0
    Oh ok thanks, another question can you upgrade torque on this engine I have 450 hp 1550 torque
     
    sergk1989, Jun 5, 2016
    sergk1989, Jun 5, 2016
    #9
  12. Jun 6, 2016 #10
    Pablo-UA

    Pablo-UA Road Train Member

    7,604
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    Oct 11, 2010
    Borispol, Ukraine
    0
    max torque for this engine is 2200 NM

    but.... there are torque correction values in its eeprom

    may be changed with MiniDiag ore Star diagnose with relevant key.

    The true is that correction may be from 90% to 110% in four points.
     
    Pablo-UA, Jun 6, 2016
    Pablo-UA, Jun 6, 2016
    #10
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