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What's this noise??!!

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    What's this noise??!!

    There is a whining/sucking noise coming from the engine on start up. It only makes the noise sometimes. Usually on cold starts. I have attached a YouTube video.


    http://youtu.be/5TTQ5JVrXC8

    #2
    Is it an turbo?
    Hank Ahrens
    1984 Alpine Coupe
    1978 911sc

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      #3
      If it "sounds like a sucking noise" it probably is. Since you know that the intake side sucks, the cylinder does the squeezing/banging, and the exhaust side does the blowing you should be able to narrow down where the noise is coming from pretty easily.

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        #4
        Video sounds more like a bearing squealing or something.

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          #5
          Starter noise?
          sigpic
          1987 325e Lachssilber w/ MarkD chip and late bumpers, Zender EVO spoiler, s3.25 LSD

          Originally posted by nando
          I don't think there's really strong evidence that ZDDP harms cats.

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            #6
            That's the starter, and that's NOT a 325i - that is a 325e judging by the intake manifold....
            john@m20guru.com
            Links:
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