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Loud knocking noise front top end and smoke

SheddySheard
in BMW X5 Series Forum

Featured Replies

Hi all, I’m new to the group. I have a 2009 X5 3.0d m57 with a loud knocking noise from the top end of the engine and white/grey smoke from the exhaust.

I have tried unplugging the injectors one by one but the noise remains, it seems to becoming from the top front of the motor.

Any suggestions would be welcome

E9D0EEE9-C0EF-4D8E-B95C-8662D2EABF30.MOVUnavailable  

 

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    • Author

    Diagnostic scan shows nothing, I’ve unplugged the injectors one by one but the noise remains. I had the injectors tested and all seemed fine but I know they can suddenly fail. I’m thinking it might be a stuck or broken follower, so I’m going to take the cover off and have a check.

    Do these suffer from oil galleries getting blocked

  • Quote
    • Author

    Just managed to get injector 5 out as it was stuck fast and I didn’t have a pull, now it’s out I’ve found this which I’m guessing is going to be my problem. A very badly seated injector 

    8383B00B-FD62-4CB2-B28E-04A2C5C1C107.jpeg

  • Quote
    • Author

    Yes, they have to be coded to the car but I’m going to get this one checked first as it may have just been badly seated and loose 

  • Quote
    • 1 year later...

    Hi,

     

    I have the same fault, was it the injectors? 

  • Quote

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