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Thread: Vectra 2.0t (Z20NET) - diesel sound?

  1. #1
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    Default Vectra 2.0t (Z20NET) - diesel sound?

    Hello,

    Does anybody knows why my vectra sometimes sounds like diesel if I start it from cold?
    Noise is not present always and if I switch engine off and then start again it runs fine.
    I change oil and filter every 10K miles (Mobil 1 0w-40) and my driving style is not too sharp. It is 2007 vectra with 60K miles on the clock.

    This is the noise

    http://www.youtube.com/watch?v=0KTexbAk2t8

    Can be this problem related with my poor battery? When it's cold outside It shows 11.9V on-screen before engine is on and if I start the engine voltage drops down to 9.8V ? After few seconds voltage is back on 14.3V.


    Thank you for help.

  2. #2
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    Vehicle : z

    Trim : z

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    Lack of oil to the timing chain? (or is that the 2.2)

    When was the oil last changed?

  3. #3
    East Scotland Regional Organiser signumboy's Avatar
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    Vehicle : Signum

    Trim : Design

    Engine : 2.0 Ltr Turbo

    Year : 2004

    Mileage : 38000

    Default

    don't think i would run that engine like that ..better get it checked out before some real damage occurs ...to me sounds like oil is not reaching the parts it should and can only result in one costly experience

  4. #4
    East Scotland Regional Organiser signumboy's Avatar
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    Vehicle : Signum

    Trim : Design

    Engine : 2.0 Ltr Turbo

    Year : 2004

    Mileage : 38000

    Default

    Quote Originally Posted by tony-1977 View Post
    Lack of oil to the timing chain? (or is that the 2.2)

    When was the oil last changed?
    Z20Net has a chain too

  5. #5
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    Default

    Thank you for reply!

    Oil was changed 2 weeks ago...filled to one dash under MAX indicator (5,7l) and the noise is present since I have this car (one year). This noise only happens maybe twice in a month and always in the morning when it is cold.
    As soon I turn engine off and start it again, it is quiet as a mouse.

    Does this engine have "camshaft phase variator"? I was told that some similar noise on other cars comes from that thing.

    Tech2 doesn't show any faults and this problem is so rarely present that it can not be reproduced on service.

    Any advice?

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    I'm so glad my oil burner doesn't sound that bad

    Hope you get it sorted fella

  7. #7
    Full Member Caveman_nige's Avatar
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    Vehicle : Vectra and a Signum

    Trim : top of the line in both

    Engine : Z18XE,Z19DTH,Z20NET

    Year : 2006

    Default

    Quote Originally Posted by signumboy View Post
    don't think i would run that engine like that ..better get it checked out before some real damage occurs ...to me sounds like oil is not reaching the parts it should and can only result in one costly experience
    agreed... its so not right, should not be ignored just because it goes away.
    My old Signum, the animal; she now rests in pieces in several other members cars.. https://www.vectra-c.com/forum/garag...vehicle&id=200
    The wifes vec show car, started as a standard daily driver and ended up like this. https://www.vectra-c.com/forum/garag...vehicle&id=709



  8. #8
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    Vehicle : Vauxhall Astra-J

    Trim : Elite

    Engine : 2.0 CDTi

    Year : 2013

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    Can't play the youtube file at work, but chances are it's either a lazy hydraulic lifter, or a sticky tensioner for the timing chain.

    Either way, as said, don't ignore it.

  9. #9
    Regular Member john_k_sri's Avatar
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    Vehicle : Vectra

    Trim : SRI NAV XP

    Engine : 1.9 CDTI 150

    Year : 2007

    Mileage : 72K

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    The 2.0T should be ultra-quiet at all times, including at idle. Needs checking out pronto.

  10. #10
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    Default

    Quote Originally Posted by Big Dave View Post
    Can't play the youtube file at work, but chances are it's either a lazy hydraulic lifter, or a sticky tensioner for the timing chain.

    Either way, as said, don't ignore it.
    this doesn't sound cheap

    How can service check either of this thing without stripping engine off?

    Can be this related with wrong/strange map on this car?

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