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Thread: Injector replacement party with the V6CDTi

  1. #1
    Regular Member Celes's Avatar
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    Vehicle : Opel Signum

    Trim : Sport

    Engine : 3.0 CDTI

    Year : 12/03

    Thumbs up Injector replacement party with the V6CDTi

    Set about replacing the injectors of my car on Saturday Pardon my faulty lights and brake-pad light

    This is a cold start with old injectors on day D
    http://www.youtube.com/watch?v=Dq0M0Lp6Y4U

    After 4hours of screwing around all 6 injectors were out and replaced with new ones. This is the immediate result. Starts up funny
    http://www.youtube.com/watch?v=HdrMgVv1iWk

    This however, is a proper cold start with the new injectors. I think it sounds much better.
    http://www.youtube.com/watch?v=M1pKpi3G9U4


    I have to say that the engine runs much better under acceleration and only smokes a bit when close to redline (in 3rd gear only ). I'm a happy bunny now Fuel consumption has also improved, whereas power remains unchanged

    This is definitely something I recommend to anyone who can source injectors for a good price, otherwise just forget it...these are 750€ a pop from a dealer

  2. #2
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    Vehicle : Vectra

    Trim : SRI

    Engine : 3.0 V6 CDTI

    Year : 2007

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    You got a part number Celes? Are they the same for the Y30DT and the Z30DT?

  3. #3
    Regular Member Celes's Avatar
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    Vehicle : Opel Signum

    Trim : Sport

    Engine : 3.0 CDTI

    Year : 12/03

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    Quote Originally Posted by lee_umney View Post
    You got a part number Celes? Are they the same for the Y30DT and the Z30DT?
    I've 18 injectors for the Y30DT at home (6 bad, 6 unknown, and 6 good-ish) but unfortunately they won't fit the Z30DT.

  4. #4
    Regular Member Steven's Avatar
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    Sounds alot better mate - good work

  5. #5
    Full Member merikiito's Avatar
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    Vehicle : Insignia CDTi SRi NAV 160

    Trim : SRi

    Engine : A20DTH

    Year : 2009

    Mileage : 88000

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    Did you have to Tech 2 the injectors in?
    Did you try an injector cleaning additive first before you changed the injectors?

    Seems a bit strange they should all need replacing at once.
    Lois Griffin: Peter! You're bribing your daughter with a car?
    Peter Griffin: Ah, c'mon, Lois, isn't 'bribe' just another word for 'love'?

  6. #6
    Regular Member Celes's Avatar
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    Vehicle : Opel Signum

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    Year : 12/03

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    Quote Originally Posted by merikiito View Post
    Did you have to Tech 2 the injectors in?
    Did you try an injector cleaning additive first before you changed the injectors?

    Seems a bit strange they should all need replacing at once.
    Didn't need to use Tech2 to make the new injectors work
    Tried various additives and none helped with the slight smoke issue...and anyway the old injectors weren't all that bad I replaced all 6 only because I got a bargain...450€ for the lot...brand new Wouldn't have touched them otherwise

  7. #7
    Full Member merikiito's Avatar
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    Vehicle : Insignia CDTi SRi NAV 160

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    Engine : A20DTH

    Year : 2009

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    I thought you had to tech 2 new injectors in as the way they are made means they all have different fuel flows. There should be an ident number or something which tells you the flow value which is then programmed into the car.

    By not doing this it could cause damage to the car and poor fuelling/performance.
    Lois Griffin: Peter! You're bribing your daughter with a car?
    Peter Griffin: Ah, c'mon, Lois, isn't 'bribe' just another word for 'love'?

  8. #8
    Regular Member Celes's Avatar
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    Vehicle : Opel Signum

    Trim : Sport

    Engine : 3.0 CDTI

    Year : 12/03

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    Quote Originally Posted by merikiito View Post
    I thought you had to tech 2 new injectors in as the way they are made means they all have different fuel flows. There should be an ident number or something which tells you the flow value which is then programmed into the car.

    By not doing this it could cause damage to the car and poor fuelling/performance.
    There are some numbers on injectors M4 M25 M13 M12 etc. (old ones were L), but I was told by the dealer it won't matter. The 1.9CDTi does need them coded though.

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