This from a different engine with slightly different turbo but you can get a picture how the rod is pulled by vacuum when engine is started.

https://www.youtube.com/watch?v=2TNk...nel=GloriaSlap

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E39 530dA -02 M-Sport Messing metallic
E53 X5 3.0dA -06 Sport Stratus grey
E70 X5 40d -12 M-Sport Space grey