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Thread: compression z22se

  1. #1
    Regular Member delboy2028's Avatar
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    Vehicle InfoStats

    Vehicle : vauxhall

    Trim : 150

    Engine : 1.9 cdti

    Year : 54

    Default compression z22se

    what is the correct compression for a z22se engine in a 2003 vec

    mine is between 8 - 9 bar is this a problem or shal i not worrie?

  2. #2
    Regular Member davree's Avatar
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    Vehicle InfoStats

    Vehicle : Insignia

    Trim : SRi

    Engine : 2.0 CDTI (160)

    Year : 2010

    Mileage : 26000

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    Compression of a Z22SE should be between 12 and 15 bar with a compression ratio of 10.0:1 so yours does seem a bit low!!

    I have read however that unless you do a compression test on these engines without being connected to vaux diagnostic equipment or similar you wont get a true reading as the throttle valve is electronically controlled and needs to be controlled by the vaux equipment.

    HTH
    Last edited by davree; 3rd January 2010 at 19:29.

  3. #3
    Regular Member delboy2028's Avatar
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    Vehicle : vauxhall

    Trim : 150

    Engine : 1.9 cdti

    Year : 54

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    ok then so just dont worrie hahaha am sure its fine got timimng chain to do soon so on with that

  4. #4
    Regular Member davree's Avatar
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    Vehicle : Insignia

    Trim : SRi

    Engine : 2.0 CDTI (160)

    Year : 2010

    Mileage : 26000

    Default

    Quote Originally Posted by delboy2028 View Post
    ok then so just dont worrie hahaha am sure its fine got timimng chain to do soon so on with that
    Good luck with that not something I would like to tackle myself TBH

  5. #5
    Regular Member delboy2028's Avatar
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    Vehicle : vauxhall

    Trim : 150

    Engine : 1.9 cdti

    Year : 54

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    hopfully wont to be bad

  6. #6
    Regular Member rushy's Avatar
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    Vehicle InfoStats

    Vehicle : SRi


    Engine : Z22SE (2.2 Petrol)

    Year : 2004

    Mileage : 110000

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    Pop into the 2.2 site, z22se.co.uk. They'll be able to tell you real world figures mate. If your compression is pretty much the same across the 4 bore's then you'll be fine. If a drop of oil in the cylinder raises the compression then the rings might need looking at.

  7. #7
    Regular Member rushy's Avatar
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    Vehicle : SRi


    Engine : Z22SE (2.2 Petrol)

    Year : 2004

    Mileage : 110000

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    I see your already on there

  8. #8
    Regular Member delboy2028's Avatar
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    Vehicle : vauxhall

    Trim : 150

    Engine : 1.9 cdti

    Year : 54

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    just lol

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