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M272 C280 Balance shaft question

Discussion in 'Engine' started by mark_le_b, Dec 12, 2016.

  1. mark_le_b

    mark_le_b Hardcore MB Enthusiast

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    Question on the balance shaft issue prone M272 engine (C280)

    Do they all suffer form the issue if the engine code is within the range effected by the problem, or, is it luck of the draw??

    I am looking at an 06 - 69k miles car, but the worry if putting me off!

    If it doesn't have the issue now - will it as some point?

    Thanks
     
  2. PobodY

    PobodY Hardcore MB Enthusiast

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    It's a good question, but I'm not sure what the real answer is.

    Logically it's the weakest point, so given enough miles and wear that's what will fail first. However, that doesn't mean it's going to be the same point for everyone. - An engine that has been thrashed is going to go sooner than one that has been treated gently, been warmed-up, had regular oil changes.

    I have to admit that I do worry about mine, but I've had no problems yet.
     
  3. OP
    OP
    mark_le_b

    mark_le_b Hardcore MB Enthusiast

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    Seems fine now - decent miles and full service history - but not sure if I should steer clear?! What a decision.....
     
  4. grober

    grober Hardcore MB Enthusiast

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    http://mbworld.org/wiki/images/0/0b/Mercedes_M272_balance_shaft_service_bulletin.pdf
    As you can see from the above its only the first fault that's the really expensive one.
    engine nos as follows
    engines up to #2729..30 468933 -- this when the gear is the problem

    engines up to #2729..30 759427 -- this when the adjustment solenoids are the problem

    engines up to #2729..30 895140 -- this when the adjustment solenoids leak oil

    The first two scenarios cause "check engine light", the third is just an oil leak.

    That said if the engine's timing gear is of inferior material as in scenario 1 the problem is most likely going to surface sometime.
    If you are still keen on the car but its engine falls within the suspect numbers you could try asking for a reduction in the asking price commensurate with the cost of repairing same?
     
    1 person likes this.
  5. OP
    OP
    mark_le_b

    mark_le_b Hardcore MB Enthusiast

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    From the VIB I have been given the engine is one that will be prone - I'll ask for a big discount :)
     
  6. zenman63

    zenman63 Hardcore MB Enthusiast

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    Or it has been done.
     
  7. OP
    OP
    mark_le_b

    mark_le_b Hardcore MB Enthusiast

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    Not that has been mentioned by seller (but it does have full Merc history apparently)
     

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