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Thread: Vectra C 2008 hatchback, z18xer 1.8 - Hissing noise from engine

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    Vehicle : Opel vectra

    Trim : 1.8 litre

    Engine : autotransmission

    Year : 2008

    Default Vectra C 2008 hatchback, z18xer 1.8 - Hissing noise from engine

    Hi

    i have a Vectra C 2008 hatchback, z18xer 1.8 and I cant figure out where this hissing noise is coming from. Can anyone help me please?

    Its definitely from the driver side of the engine.

    https://youtu.be/4tclXMK-aNA

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    Vehicle : Vectra Estate

    Trim : VXR

    Engine : Z28NEH

    Year : 07

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    Id guess its a split in a vac pipe down there but im not familiar with the 1.8 family so do not have first hand experience of what's there. @RBH might though.

    If your speaking to us UK people its on the NS above the gearbox
    Vectra VXR estate 2007 Sapphire Black
    Teapot Tuned 245/300
    Eibachs B8's, fully loaded factory options

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    Vehicle : Opel vectra

    Trim : 1.8 litre

    Engine : autotransmission

    Year : 2008

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    thanks for your reply, what does NS stand for?

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    Vehicle : Saab 9-3 (Vectra C in disguise)

    Trim : Linear Sport

    Engine : 1.9 TiD 150

    Year : 2005

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    Nearside - side nearest the kerb (which for us in the UK (and those who also drive on the left with right hand drive cars, means the left side of the car) or your driver's side.
    You also have off side which for you would be the passenger side.

    Albeit for the longest time I couldn't get my head around it (and I've lived in the UK most of my life) for years I'd just refer to drivers side and passenger side.

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    Vehicle : Opel Vectra

    Trim : GTS

    Engine : 2.0 Turbo (Z20NET)

    Year : 2004

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    Quote Originally Posted by MrF View Post
    Nearside - side nearest the kerb (which for us in the UK (and those who also drive on the left with right hand drive cars, means the left side of the car) or your driver's side.
    You also have off side which for you would be the passenger side.

    Albeit for the longest time I couldn't get my head around it (and I've lived in the UK most of my life) for years I'd just refer to drivers side and passenger side.
    This whole NS or OS thing just seems confusing to me, why not just left or right? It's the same in any country

    About the problem OP is having, you could try spraying a small amount of brake cleaner around the vacuum hoses, if the sound changes or the engine responds to you spraying by raising/dropping RPM you have found the location of the leak.
    Don't spray too much on there and stay clear of any exhaust parts since brake cleaner is flammable

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    Vehicle : Opel vectra

    Trim : 1.8 litre

    Engine : autotransmission

    Year : 2008

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    Thank you for your reply, i considered the brake cleaner but as clumsy i know i can be i think ill try a different spray ��

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    Vehicle : Opel vectra

    Trim : 1.8 litre

    Engine : autotransmission

    Year : 2008

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    Quote Originally Posted by Entharion View Post
    This whole NS or OS thing just seems confusing to me, why not just left or right? It's the same in any country

    About the problem OP is having, you could try spraying a small amount of brake cleaner around the vacuum hoses, if the sound changes or the engine responds to you spraying by raising/dropping RPM you have found the location of the leak.
    Don't spray too much on there and stay clear of any exhaust parts since brake cleaner is flammable

    To clarify more, i dont have a clue where these hoses are. Have tried to find it on 7zap.com drawing for my vehicle but so far no luck.

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    Vehicle : Hyundai Ioniq Hybrid

    Trim : Premium SE

    Engine : 1.6 with 32KW motor


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    Breather diaphragm in cam cover

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    Vehicle : Opel vectra

    Trim : 1.8 litre

    Engine : autotransmission

    Year : 2008

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    Quote Originally Posted by troutybrown View Post
    Breather diaphragm in cam cover
    100% correct. I was fooled by the hissing noise seemingly coming from right side of engine the (valve with this diaphragm is on left side) but when i take off the cover over spark plugs its obviuosly coming from this valve

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