5.5 bi turbo rattle

Discussion in 'AMG Lounge' started by zenman63, May 31, 2017.

  1. zenman63

    zenman63 MB Enthusiast

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    Anyone with the 5.5 bi turbo have a rattle on start up?
    My ML63 late 2012 has a rattle on start very time even hot.
    Car done 60k and just serviced at MB.
    On the history it has Shell ultra w5 40 oil done 500 miles since service.
    It sounds like valve train and at the front like a cam adjuster.
     
  2. OP
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    zenman63

    zenman63 MB Enthusiast

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    Well thats encouraging 79 views and nothing to report, not even sure if its normal.
     
  3. mounty3279

    mounty3279 Active Member

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    Everybody's scared......
     
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    zenman63

    zenman63 MB Enthusiast

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    There got to be someone with a 205 e63 that can say it it starts with no rattle .
     
  5. MarkACLS

    MarkACLS Active Member

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    Got a 2014 E class with the M157 5.5 Biturbo. It's done just over 21K miles now. Absolutely no rattle on start-up. Since its a direct injection engine they do sound 'tappety' - but that's the injectors.

    Sent from my SM-G950F using Tapatalk
     
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    zenman63

    zenman63 MB Enthusiast

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    Ok cool, this rattles until the oils up there, if you turn it off and re start it's silent.
    I will take a video.
     
  7. AlexM

    AlexM Active Member

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    What is your engine number? there was a mod to add an anti-reversion valve to the timing chain tensioner. Does it rattle for a couple of seconds and then run normally?.

    My MY2013 car needed the new timing chain tensioner under warranty. Sounded pretty bad for a couple of seconds after startup. Strangely it did it more after a hot start than a cold start, and more noticable still if the car was parked on a slope. It's been fine since the chain tensioner was replaced.

    I have the typical M157 injector noise, and also a slight hint of lifter noise on the left bank that apparently is acceptable if it goes away off-idle, which it does. It is a noisy unit, and not in a good way, even if it is not really audible in the cabin and is drowned out by the exhaust. It just seems to be the way they all are.
    Regards,
    Alex
     
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  8. mounty3279

    mounty3279 Active Member

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  9. HB

    HB MB Enthusiast

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    Sounds like a diesel at idle but, no rattles here
     
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  10. OP
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    zenman63

    zenman63 MB Enthusiast

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    Thanks for this help, it runs a treat no problem at all and yes its just 1-2 seconds from a cold start and 1 second when hot.
    I will look on epc for the valve in the video and chain tensioner.
     
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    zenman63

    zenman63 MB Enthusiast

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  12. AlexM

    AlexM Active Member

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