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Thread: 1.9cdti smokes when at 80 mph

  1. #1
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    Default 1.9cdti smokes when at 80 mph

    Hi All,

    This is doing my head in!!
    When driving to work on the motorway after 10 minutes plumes of white smoke come out the back, No warning lights come on.
    As i am still rolling i switch off then on the ignition and it's gone and will not return until the next day.
    If i keep the speed below 75 mph it does not happen.
    any ideas
    Cheers Woody

  2. #2
    Regular Member Dan_BlackSRi's Avatar
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    Vehicle : Vectra SRi

    Trim : XP NAV

    Engine : 1.9 CDTi 150

    Year : 2007

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    Don't speed

    Do you lose any water at all..?

    Any fluids need regular topping up..?

  3. #3
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    Default

    lets just say i was overtaking!!

    Fluids are all fine i never use a drop.
    I presume the smoke is un-burnt fuel.
    Woody

  4. #4
    Full Member Big Sig's Avatar
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    Could it be the DPF regenerating?
    Now I need a turbo to keep up!

  5. #5
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    Default

    Big Sig,

    What is the DPF?
    Woody

  6. #6
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    Trim : Sri nav

    Engine : Z19dth

    Year : 2006


  7. #7
    Regular Member DaveW555's Avatar
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    Default

    Wouldnt have thought it would be the DPF regenerating, dont you have to hold them at about 4000rpm for about half an hour to do that?? I could be wrong of course.

  8. #8
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    Trim : Sri nav

    Engine : Z19dth

    Year : 2006

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    If it's needing to regenerate, it'll see the drive on the motorway as it's chance to do it.

  9. #9
    Regular Member TonyTM's Avatar
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    Default

    You just had a DPF regeneration
    No big deal

  10. #10
    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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    All Signum CDTI's fitted with DPF.

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