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Thread: Misfire at several cylindres

  1. #1
    Join Date
    Apr 2016
    Location
    Spain
    Posts
    1
    My Cars
    BMW 520i

    Misfire at several cylindres

    Morning.

    My bmw e60 520i with M54 engine smokes a lot when starting and when I accelerate and it starts to shake and loses power. I have passed the DIS and I get the following errors: DME-I have already changed the spark plugs
    DME-274E Misfire at several cylindres - Damaging exhaust gas after sequence - Fault currently not present
    DME-2746 Misfire, cylinder 2 - Damaging exhaust gas after sequence - Fault currently not present
    DME-2744 Misfire, cylinder 3 - Damaging exhaust gas after sequence - Fault currently not present
    DME-2742 Misfire, cylinder 1 - Damaging exhaust gas after sequence - Fault currently not present
    DME-27C3 Thermal oil-level sensor - signal dropped - Fault currently not present
    What could it be?
    Coils?

    Injectors?
    Does it calculate CCV?

  2. #2
    Join Date
    Jul 2004
    Location
    Houston, TX
    Posts
    12,526
    My Cars
    36 Cylinders
    Do a smoke test to evaluate for any vacuum leaks first. Any unmetered air can cause that.

    You may also have CCV issues or the vacuum leak inside there.
    -Abel

    - E36 328is ~210-220whp: Lots of Mods.
    - 2000 Z3: Many Mods.
    - 2003 VW Jetta TDI Manual 47-50mpg
    - 1999 S52 Estoril M Coupe
    - 2014 328d Wagon, self-tuned, 270hp/430ft-lbs
    - 2019 M2 Competition, self-tuned, 504whp
    - 2016 Mini Cooper S

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