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Multiple cylinder misfire and blue smoke

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by John2684, Oct 9, 2019.

  1. John2684

    John2684 New Member

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    Joined:
    Oct 9, 2019
    Your Mercedes:
    C240 advantgard 2.4 v6 2003
    I have a 2003 mercedesc240 2.4 with 90.000 mls I'm getting error codes for random/Multiple cylinder misfire and blue smoke when accelerating .
     
  2. LostKiwi

    LostKiwi Senior Member

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    Joined:
    Aug 25, 2006
    Location:
    Midlands / Charente-Maritime
    Your Mercedes:
    '93 500SL-32, '01 W210 Estate E240, 02 R230 SL500 (Malcolm Spec), 04 Smart Roadster Coupe
    A common problem on these is blocked engine breathers - especially if the maintenance has been scrimped on..
    To check remove the oil filler cap and check for excessive pulsing from the filler. Also check the cap for build ups of carbon on the inside. If the breathers are blocked crankcase pressure builds up forcing oil past the piston rings.
     
    ajlsl600 likes this.
  3. OP
    John2684

    John2684 New Member

    Messages:
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    Joined:
    Oct 9, 2019
    Your Mercedes:
    C240 advantgard 2.4 v6 2003
    Hopefully this is the problem with mine, I'll follow your advice and check the filler and let you know how I get on. Other than that I'm fearing the wosre
     

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