Volks AutosEM Tuning
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  1. #1
    vw754's Avatar
    vorsprung Durch Technik

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    CLOUDS OF BLACK!

    52 plate a4 tdi 130 sport throwing out heavy clouds of black smoke,so much it cant be driven! Vag-com shows no faults but does show egr is only showing 19.8% . When connected to another a4 it shows 59.9% so i take it egr is failed? changed all filters etc, any other ideas'?

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  3. #2
    Neil_S's Avatar
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    Have you tried diagnosing by unplugging the vacuum line to the top of the EGR?

  4. #3
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    Bro.Paul 2.5TDI Quattro Sport

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    try taking the pipe off the valve and dont block it up, see if that stops it, then report back to us.

  5. #4
    Jason's Avatar
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    Quote Originally Posted by Neil_S
    Have you tried diagnosing by unplugging the vacuum line to the top of the EGR?
    Problem is that when you start hitting a few tens of thousands of miles the EGR valve get's that caked up with crap (along with all the inlet manifolds) that it usualy sticks full open when warm and never closes properly anyway so disconecting will make no difference!

  6. #5
    Turkster's Avatar
    Bro.Paul 2.5TDI Quattro Sport

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    Take the egr off and clean it, you may find its clogged up,

  7. #6
    fjtwelve's Avatar
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    When this happened to me together withe acute lack of performance it was the N75.
    2001 A6 Avant 2.5TDi quattro Sport 180hp+TurboDynamics MD438 hybrid+Bosio Race683s+3" exhaust+Celtic Tuning remap - now with adamss24 replaced with runabout
    2007 BMW 535d AM Sport + Celtic remap
    2004 A4 Avant 1.9TDi quattro Sport 130hp + Superchip - sold & replaced by
    2005 Audi TT 1.8T
    1988 Yamaha FJ1200 120hp finally traded after 23 years for
    1986 Yamaha FJ100 (1300 barrels shhh!) with too many bits to mention
    2011 BMW 320d M Sport son #1
    2004 Suzuki SV650 S son #2

  8. #7
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    Quote Originally Posted by vw754
    52 plate a4 tdi 130 sport throwing out heavy clouds of black smoke,so much it cant be driven! Vag-com shows no faults but does show egr is only showing 19.8% . When connected to another a4 it shows 59.9% so i take it egr is failed? changed all filters etc, any other ideas'?
    Its sounds like you have a boost leak somewhere either coming from the small vacuum pipes too and from the n75 to turbo or pump.........but i would first look for a break in one of the intercooler pipes for a slit or a hose that has popped off.

    Did this on my mk3 golf when i upped the boost and did it a futher million times when i upgraded the turbo x2.

  9. #8
    Turkster's Avatar
    Bro.Paul 2.5TDI Quattro Sport

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    How many miles has the car done ?

  10. #9
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    F me this site/forum is slow...........i hope your cars perform better than than this.......maybe not!!

  11. #10
    Turkster's Avatar
    Bro.Paul 2.5TDI Quattro Sport

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    sounds like your internet connection could do with an oild change mate, the site works fine for me,

  12. #11
    vw754's Avatar
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    sorted!

    Thanks all for your help,car is now sorted.
    It was the egr solenoid valve.

  13. #12
    Jason's Avatar
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    Quote Originally Posted by vw754
    Thanks all for your help,car is now sorted.
    It was the egr solenoid valve.
    SUPRISE SUPRISE!

  14. #13
    Turkster's Avatar
    Bro.Paul 2.5TDI Quattro Sport

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    Quote Originally Posted by vw754
    Thanks all for your help,car is now sorted.
    It was the egr solenoid valve.
    Not that old cheesnut

  15. #14
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    Quote Originally Posted by Turkster
    sounds like your internet connection could do with an oild change mate, the site works fine for me,
    Yeah right............thats why it takes people a couple of weeks to answer a question around here if your lucky that is.....and you get left in the .

 

 

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