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A4 Knocking sound
AUDI

  • AUDI A4 B9 Saloon (8W2, 8WC) 35 TFSI Mild Hybrid
    @user_2239086 Feb 13, 2024
    Member
    A knocking sound on starting of the engine first thing in mornings for a few seconds also while idling it miss fires for a few seconds [ that doesn’t happen too often but once in every 5 minutes ] can any say what can be the cause of this 
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    Started

    13.02.24

    Latest reply

    16.02.24

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    3

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    89

  • @Cleaskulty Feb 13, 2024
    Member
    Alternatively it could be the hydro-compensators knocking, it might be worth checking the condition of the engine oil or replacing it with new.
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    • AUDI A4 B9 Saloon (8W2, 8WC) 35 TFSI Mild Hybrid
      @user_2239086 @Cleaskulty Feb 15, 2024
      Member
      Good evening the oil should be ok its been getting a service done every year by Audi and am only driving about 3 to 4 thousand miles a year the car is park most of the time.
      Reply
    • @Cleaskulty @user_2239086 Feb 16, 2024
      Member
      In this case it is probably normal and no need to worry, and it all happens because the car has been idle for a long time before starting.
      Reply

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