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Cold Start rattle, need a good ear please

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    Cold Start rattle, need a good ear please

    I recorded this audio yesterday morning. Last 10 seconds of the file is what interests me. I am not sure if this is VANOS, possibly loose header manifold bolts, loose timing chain? The noise goes away after a few seconds or if you give it slight gas. Would love to know if anyone heard this same noise. The attachment is a small m4a file.
    Attached Files

    #2
    Lama at Beisan told me my VANOS seals are shot

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      #3
      Lama tells everybody their vanos seals are shot. <3 Lama though

      I don't think its loose header bolts, thats more of a sharp ticking noise.

      When/has the vanos ever been serviced?

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        #4
        Originally posted by jayjaya29 View Post
        Lama tells everybody their vanos seals are shot. <3 Lama though

        I don't think its loose header bolts, thats more of a sharp ticking noise.

        When/has the vanos ever been serviced?
        No clue 😆 I changed the solenoid, cleaned the valve body, and replaced seals on the sealing plate. I am planning on changing my valve cover gasket, and will service the VANOS at the same time. 130K miles.

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          #5
          Originally posted by jayjaya29 View Post
          Lama tells everybody their vanos seals are shot. <3 Lama though

          I don't think its loose header bolts, thats more of a sharp ticking noise.

          When/has the vanos ever been serviced?
          The reason I asked about the header bolts is I smell either exhaust or whatever it is at 5-8K when I step on it hard, so thought maybe a header gasket is not sealing well due to loose bolts

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            #6
            Its probably leakage from your valve cover gasket that you are smelling.

            Plan on changing the upper timing chain guide while you're in there:
            S54 - Exhaust Upper Chain Guide Item # BS026For BMW engine S54 Product Information. Designed specifically for the BMW S54 engine, this exhaust upper chain.

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