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knocking

  1. G

    M119.970 engine knocking sound

    Hi all, I have a 1993 Mercedes 500 coupe that has developed a knocking sound. First we thought it was a broken rail so replaced with all rails, chain and tensioner with genuine parts bar the bottom rail. Lower pan was dropped and debris removed plus pick up cleaned out. There was broken side...
    • grob115
    • Thread
    • engine noise knocking m119 m119.970 tapping sound timing chain
    • Replies: 11
    • Forum: M119 Engine
  2. Benzy Boy

    M119 faint knocking sound after oil change

    My 1997 M119 has a full service history with Mobil1 5w40 synthetic When I bought it I switched to Castrol Edge 5w40 synthetic at my first oil change Today 4000kms later I did an oil change and switched to Redline 5w40 synthetic and filled in 8.5 quarts, oil level is just above middle of min and...
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