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Thread: OFHG on N55 135i - diagnosis confirmation

  1. #1
    Join Date
    Jun 2017
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    New Zealand
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    My Cars
    E89 135i (N55), X5 4.8is

    Question OFHG on N55 135i - diagnosis confirmation

    Hi Everyone

    I’m after a confirmation of what’s wrong with my 2011 135i with the N55 engine.

    When I was replacing my charge pipe, I found that the front of the engine is kinda oily and cruddy. I took a video (attached below). It appears that this is the OFHG - is that correct?

    I had to replace my serpentine belt and tensioner earlier (about 6 months ago) so this has happened sometime after that.

    Edit: forum won’t let me upload the video so I put it on streamable.

    https://streamable.com/s/xhi1q/pszkdn

    Any insight appreciated.
    Attached Images Attached Images
    Last edited by 4799cc; 09-01-2018 at 09:32 PM.

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