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smoke on start up

Discussion in 'A3/S3/Sportback (8P Chassis)' started by vw754, Mar 4, 2010.

  1. vw754
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    vw754 vorsprung Durch Technik

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    I get blue smoke only in the morning on a first start up only,once i start it it never does it again even after 3/4 hours of being parked up.................just on the first start up after standing all night.
    Been told could be valve stem seals and nothing worry about. 2.0 tdi 8p
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  2. tdisportuk
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    tdisportuk Member

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    Hi there,

    mine does that too on some occasions or its just thick black smoke. After using a fuel cleaner such as redex and using decent fuel like shell etc etc and giving it a blast on the motorway ive found it rarely happens now.

    Is start up and performance normal?
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  3. vw754
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    vw754 vorsprung Durch Technik

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    everything 100%
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  4. Lee_R
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    Lee_R Active Member

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    mine does it too, not every morning, if its left for 2 or 3 days then it always does it. I've never worried about it, I see too many diesels chucking out smoke on the motorways to worry!!
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  5. vw754
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    vw754 vorsprung Durch Technik

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    ok nice one........mine gets used once or twice a week at most so maybe if i used it everyday it wouldnt do it........nothing to worry about anyway ,just thort id mention it.
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  6. rickyquicky
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    rickyquicky Member

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    Its nothing to worry about at all if its only on start-up from cold mate, and most diesels do this - its just the way they work... basically from cold they wont be burning the diesel as well as when the engines warm hence the unburnt **** comes out the back for a while until the diesel starts 'burning' more efficiently when it gets warmer :icon_thumright:

    If the smoke is a blue colour though on start up...that can be valve stem seals.
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