E46 318 Rattling exhaust
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  1. #1
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    Rattling exhaust

    I have this weird violent rattle when I start my car from cold, only happens for a minute whilst the air pump is on but it is a really violent rattle, after the air pump goes of no more rattle, sounds like it is coming from the exhaust but I am confused why it only does it whilst the air pump is on, any ideas?

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    Rattling exhaust

    Have you tried the air pump?

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    Lee_h (27-11-2012)

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    Rattling exhaust

    Might be unrelated but have you checked your engine mounts


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    Rattling exhaust

    Tried air pump that is fine, haven't looked at the engine mounts but surely if it was them it would do it all the time, could it be the cat?

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    Get someone to start it up for up Lee and see whereabouts on the exhaust its vibrating most ? Means getting dirty though so maybe a phone call to @Niall could be in order

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    Rattling exhaust

    Quote Originally Posted by Lee_h View Post
    Tried air pump that is fine, haven't looked at the engine mounts but surely if it was them it would do it all the time, could it be the cat?
    As said could be unrelated just with the pump running the extra load on the engine could be all it needs


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    Rattling exhaust

    Quote Originally Posted by simonsays View Post
    Get someone to start it up for up Lee and see whereabouts on the exhaust its vibrating most ? Means getting dirty though so maybe a phone call to @Niall could be in order
    I have listened and it sounds like it is coming from the the exhaust just under the drivers seat but its that loud I can't pin point it lol

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    My 328i rattles on start up due to the exhaust heat shields being loose, check them too
    Hope this helps

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    Rattling exhaust

    Quote Originally Posted by Tjp8 View Post
    My 328i rattles on start up due to the exhaust heat shields being loose, check them too
    Hope this helps
    Will have a look at that mate

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    Rattling exhaust

    Quote Originally Posted by Lee_h View Post
    I have listened and it sounds like it is coming from the the exhaust just under the drivers seat but its that loud I can't pin point it lol
    Il pop round sometime if ya like mate? Anytime sept this weekend

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