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Blue/white smoke

Discussion in 'A4/S4 forum(B5 Chassis)' started by steady jay, Sep 8, 2012.

  1. steady jay
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    steady jay Member

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    [Sep 8, 2012]
    This f**king car is begging to annoy me now.
    Just finished work started the car up fine no problem. Go to pull away on the main road and filled it with blue/white smoke. Hasn't done it since.
    #1
  2. Av4nt
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    Av4nt Well-Known Member

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    [Sep 8, 2012]
    Checked your EGR valve lately? Could be sticking open/closed.
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  3. steady jay
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    steady jay Member

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    [Sep 8, 2012]
    Should've mentioned its 1999 1.8t
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  4. Bradderz_1988
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    Bradderz_1988 Dont replace it, Upgrade it !!

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    [Sep 9, 2012]
    White smoke is normally coolant/oil related and blue tends to be more fuel related ?? possibly just leaky valve stem seals !
    #4
  5. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Sep 10, 2012]
    had it been idling for a long time?

    Could be valve stem seals if so.
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  6. steady jay
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    steady jay Member

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    [Sep 10, 2012]
    Yeah was waiting for a mate to walk out of work too so probably 5-10 minutes, what options do I have to sort the stem seals?

    Cheers jay
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  7. steady jay
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    steady jay Member

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    [Sep 12, 2012]
    Little update/research it hasn't kicked out any smoke since last Saturday been told to check under oil cap while it's running for excess pressure and it has a lot of pressure. Which could hopefully rule out stem seals? And possibly something much easier.
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  8. jcb
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    jcb Active Member VCDS Map User

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    [Sep 12, 2012]
    really?

    Blue - Oil
    white - Water/Steam
    Black - Fuel (i.e too much of it)

    at least that is what I always went by
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  9. jcb
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    jcb Active Member VCDS Map User

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    [Sep 12, 2012]
    I am no AA mechanic but you have to ask yourself where that pressure is coming from?
    usually pressurised header tank and smokey exhaust is an immediate check for head gasket trouble.

    overheated recently, run low on coolant?
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  10. steady jay
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    steady jay Member

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    [Sep 12, 2012]
    Nope not overheated once, coolant is fine too. As it hasn't done it before or after that 1 occasion it's hard to pinpoint so unless it happens again I'm not going to worry too much.

    I'll try to get my hands on vagcom and see if that comes up with anything.
    #10
  11. Bradderz_1988
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    Bradderz_1988 Dont replace it, Upgrade it !!

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    [Sep 12, 2012]
    Get a sniff test on tge coolant bottle to check for hydracarbons this will be an indication of the head gasket.
    #11
  12. Turbo unit
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    Turbo unit Member

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    [Sep 16, 2012]
    possible slighty worn turbo seals! Happend to my s4 blue/white smoke didnt do it again for a few weeks then 1 completely just gave up this was a bout a year ago and they had done over 100k so due a change any way
    #12

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