A220 popcorn exhaust

Discussion in 'General Discussion' started by Topman2u, Mar 27, 2017.

  1. Topman2u

    Topman2u Member

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    Car:
    A220 cdi amg
    Should my exhaust be making this noise just done about 10mile trip back home and pulled up and smelt burning from back end then noticed the exhaust doing a noise like it's got popcorn inside it ( was a nice steady drive home not above 35mph) and also the car sounds like a transit van on 200,000 on clock slight judder aswell any advice please

    https://youtu.be/fPlCBSuetLA


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  2. whitenemesis

    whitenemesis MB Club Veteran

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    Lexus RC300h F-Sport 2019
    Metal cooling down, perhap the car was doing a DPF rengen?
     
  3. OP
    OP
    Topman2u

    Topman2u Member

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    Will that make it smell burning and drive about ****ty !!
    And use more diesel !!
    And it's been like it all day every time I driven it today yesterday was bang on


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  4. whitenemesis

    whitenemesis MB Club Veteran

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    Yes and yes.

    Take it for a decent long drive at motorway speeds to let it complete the regen.
     
  5. OP
    OP
    Topman2u

    Topman2u Member

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    How often does it do this !!


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  6. KennyN

    KennyN Hardcore MB Enthusiast

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    Whenever the DPF needs to , normally determined by a couple of pressure sensors before and after the filter.

    It will only start the process when the system is above a certain temp.

    Your cooling fan will be running as well , even though the engine temp is OK.

    Kenny
     
  7. OP
    OP
    Topman2u

    Topman2u Member

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    Car booked in with merc garage tomorrow to see what they say !
    Better safe than sorry may aswell while warranty is still active


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  8. PobodY

    PobodY Hardcore MB Enthusiast

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    It just sounds to me like metal contracting too. - A little more "tinny" than I'd expect assuming it's a standard exhaust.

    A DPF regen might make sense; that would certainly be getting the exhaust hotter than you'd expect.
     
  9. OP
    OP
    Topman2u

    Topman2u Member

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    Car:
    A220 cdi amg


    It's not just the exhaust the car sounds like a bag of rattle rattle rattle from the engine and using more diesel than I normally use in nearly a week


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  10. flowrider99

    flowrider99 Hardcore MB Enthusiast

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    Its a diesel! They all rattle.
     
  11. OP
    OP
    Topman2u

    Topman2u Member

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    Not like this I had a BMW 3-Series m-sport diesel and it never sounded like this plus it never sounded like this until today


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