Intake Manifold Soot Problem

Discussion in 'New TDI forum member introductions' started by Carlos, Aug 2, 2011.

  1. Carlos

    Carlos New Member

    Joined:
    Aug 2, 2011
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    1
    Car:
    98 Jetta
    I'm familiar with the TDI intake manifold soot clogging problem on my early 97 AHU TDI. Do the later model TDI's - ALH, BEW, etc also have this problem?
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  2. Seatman

    Seatman Active Member

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    Car:
    2000 Mk4 Golf Estate 1.9tdi 174 bhp
    Location:
    Scotland
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    PP764's, turbo and mapping
    Yes:D Not sure about the even later ones though.:)


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  3. chittychittybangbang

    chittychittybangbang Administrator

    Joined:
    May 23, 2007
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    Car:
    2006 Jetta TDI
    Location:
    CT
    The later ones BEW and newer aren't as bad because the EGR regulation is better with the addition of an o2 sensor and ULSD fuel leaves less residue. Most cars should be better becasue do the cleaner fuel.
  4. jjwarb

    jjwarb New Member

    Joined:
    Mar 10, 2011
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    15
    Car:
    VW Jetta/2006
    soot/carbon build up in the intake

    So, is it a sign of a bad EGR valve if a manifold has a lot of this in it or just normal?
    My 2006 has a lot in it. (also running in limp mode)
  5. chittychittybangbang

    chittychittybangbang Administrator

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    Car:
    2006 Jetta TDI
    Location:
    CT
    I believe you can also have soot from excess blowby.

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