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Thread: Loud sucking noise

  1. #1
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    Default Loud sucking noise

    Hi all,

    For the past week or so there has been a loud sucking noise when I go through the gears. To me it sounds like the air box is sucking to much air in but I'm not sure.

    Can anyone help on this one please

    Cheers

  2. #2
    Regular Member BigWilko's Avatar
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    Vehicle : Signum

    Trim : Design

    Engine : 3.0 CDTI

    Year : 2005

    Default

    You running something with a turbo? Pound to a penny it's intercooler/ hose based.

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    Regular Member SarahP's Avatar
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    Default

    try your flexi pipe.. maybe blowin

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    Regular Member m8internet's Avatar
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    Default

    As above, update your profile with the vehicle specifications

    There are many reasons why such a noise could suddenly appear

    I would start with the air inlet, which can be found when you open the bonnet
    With the engine running, place your hand over it and confirm air is being sucked in (then turn the engine off)

    Next, go to the offside headlamp and you will find a small flexible pipe which leads to the air filter box
    Quite often this is removed to access the headlamp, so make sure both ends are in place and match up
    Then as above, start up the engine and check there is no air loss from this area

    Finally, have someone raise the revs slowly (to about 2500rpm)
    Stand directly facing the engine as they do this and trace any unusual air noises that appear

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