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Mbe4000 injectors

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Assymcgee, May 31, 2022.

  1. May 31, 2022 #1
    Assymcgee

    Assymcgee Bobtail Member

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    I just put injectors in my 2010 columbia with a mbe4000, idle is better than ever but runs out of power and stumbles around 1400rpm's any ideas why?
     
    Assymcgee, May 31, 2022
    Assymcgee, May 31, 2022
    #1
    Another Canadian driver Thanks this.
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  3. May 31, 2022 #2
    skallagrime

    skallagrime Road Train Member

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    Misfiring injector at high rpm, so cam sensor or a dodgy injector?

    I know theyre new, but brand new parts can be bad too
     
    skallagrime, May 31, 2022
    skallagrime, May 31, 2022
    #2
  4. Jun 1, 2022 #3
    Assymcgee

    Assymcgee Bobtail Member

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    Would improper trim codes do this?
     
    Assymcgee, Jun 1, 2022
    Assymcgee, Jun 1, 2022
    #3
  5. Jun 1, 2022 #4
    skallagrime

    skallagrime Road Train Member

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    @Goodysnap is a real mechanic :p

    That i dont know

    I had a fuel line collapse introduce air only under load produce your issue
     
    skallagrime, Jun 1, 2022
    skallagrime, Jun 1, 2022
    #4
    Goodysnap Thanks this.
  7. Jun 1, 2022 #5
    Assymcgee

    Assymcgee Bobtail Member

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    My issue is only under load, you can free rev it with no issue as soon as you put it in gear you have lack of power and sputters around 1400
     
    Assymcgee, Jun 1, 2022
    Assymcgee, Jun 1, 2022
    #5
  8. Jun 1, 2022 #6
    Goodysnap

    Goodysnap Road Train Member

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    My game is small on MBE and don’t have any real world experience with the engine. That being said, on other engines, fuel trim codes are for long term fuel tuning and will not have a immediate affect on misfires or noticeable runabilty issues you can feel.
     
    Goodysnap, Jun 1, 2022
    Goodysnap, Jun 1, 2022
    #6
  9. Jun 1, 2022 #7
    Assymcgee

    Assymcgee Bobtail Member

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    May 31, 2022
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    What fuel line was it?
     
    Assymcgee, Jun 1, 2022
    Assymcgee, Jun 1, 2022
    #7
  10. Jun 2, 2022 #8
    skallagrime

    skallagrime Road Train Member

    3,599
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    Apr 10, 2012
    Indiana
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    Fuel pump to primary fuel filter
     
    skallagrime, Jun 2, 2022
    skallagrime, Jun 2, 2022
    #8
  11. Jun 2, 2022 #9
    uncleal13

    uncleal13 Road Train Member

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    Humboldt, Sk
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    The MBE 4000 is a unique design. The injectors are only a part of the injection process, they are located in each cylinder head. Each of them is also fed by individual injector unit pump that is mounted on the side of the block.
    If they only changed the actual injectors, then the unit pumps could still be an issue.
     
    uncleal13, Jun 2, 2022
    uncleal13, Jun 2, 2022
    #9
    spsauerland Thanks this.
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