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Thread: Black soot

  1. #1
    Join Date
    May 2013
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    keilor
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    Black soot

    followed my gti the other day and noticed a heap of black smoke every time car accelerated away from a standstill at a red light or round about , car also has alot of black soot on rear bumper and boot from new. dealer is going to replace injectors on monday, had to order them in, they said they put a camera through spark plug hole and could see them dripping. car is 5 months old with 6000 ks on it

  2. #2
    Join Date
    Jul 2011
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    Victoria
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    I see this all the time with the golf R and Sirocco R when they pull away so I don't think it's a fault, maybe its just how they are designed - run rich on take off to prevent pinging???

  3. #3
    Join Date
    Feb 2012
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    Victoria
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    Black soot

    Yeah I've even seen a TSI Tiguan doing that and a few Golf GTI's.
    Alex Aescht

    MY13 Dark Silver VW up! 5-door 55MPI manual — Comfort Style Pack, Comfort Drive Pack, Maps + More, Panoramic Sunroof
    MY11 Pepper Grey VW Polo Comfortline 66TDI manual ― Comfort Pack, Audio Pack.

  4. #4
    Join Date
    Jun 2008
    Location
    Ringwood, Victoria
    Posts
    4,140

    Black soot

    Yeah, rich down low and too lean up top.

    Stage 2+ Intercooler Carbon Intake Downpipe Swaybar DV+ Remsa.

  5. #5
    Join Date
    May 2008
    Location
    Australia
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    Black soot

    Get the breather hose replaced at VW... Stops it chewing oil as well.
    [FONT=Franklin Gothic Medium]Matt
    2015 Skoda Octavia RS | Combi | DSG | Metallic Grey | Tech Pack, Every Option Except Leather |
    Prev: 2012 VW Polo GTI | 5dr | DSG | Reflex Silver | RCD510 |

  6. #6
    Join Date
    Sep 2012
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    NSW
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    This soot is killing me at the moment, its hard to keep the hatch clean, even after 1 hr driving after cleaning, its gone all sooty...

    VW told me its "normal"

    ARRG!

  7. #7
    Join Date
    Jul 2011
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    Victoria
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    NOPE NOT NORMAL!

    The black smoke (unburnt fuel) IS normal for these high performance engines as they run rich on take off (look at a Golf or Sirocco R). The oil specs on the back are NOT. This has to do with the fact that oil is going straight past the piston rings (or through the intake) and going straight out the exhaust in a liquid form, its not even burning it!

    Just run your fingers along the inside of the exhaust tip. Either way you will get black stuff but pure carbon looks and feels like black chalk, its a powder - if there is oil mixed in with the carbon you will feel it, it's like black slime.

    Knowing these motors you probably just have ridiculously high oil consumption like the rest...

  8. #8
    Join Date
    May 2011
    Location
    Melbourne
    Posts
    291
    Welcome to GTI ownership. Bain of my existence! Especially with a white car.......
    Polo GTI - 5 door - Candy White, Xenons, Comfort Package, Audio Upgrade, Bluetooth, Parking Sensors and Tint

  9. #9
    Join Date
    Sep 2012
    Location
    NSW
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    That is right, im getting a little over 1L/1000km, but was getting much higher before the ventilation pipe change.

    My consumption test starts 21st May. Watch my car use no oil during that test for some reason.

  10. #10
    Join Date
    May 2011
    Location
    Melbourne
    Posts
    291

    Quote Originally Posted by Zakarados View Post
    That is right, im getting a little over 1L/1000km, but was getting much higher before the ventilation pipe change.

    My consumption test starts 21st May. Watch my car use no oil during that test for some reason.
    What oil you using? It appears that does make a big difference
    Polo GTI - 5 door - Candy White, Xenons, Comfort Package, Audio Upgrade, Bluetooth, Parking Sensors and Tint

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