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Engine Misfire

Discussion in 'A3/S3/Sportback (8P Chassis)' started by eggman, Jul 16, 2012.

  1. eggman
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    eggman New Member

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    [Jul 16, 2012]
    Hi,

    I have a problem with my 2004 AUDI A3 2.0 FSI. The engine has been misfiring, by this I mean it judders only on start up from cold and after driving for a while there are no apparant problems. It seems to be worse under load (going up a hill).

    I have been to AUDI and they replaced the coil packs for free as they said it was part of some warrantly recall. After they did this it was ok for a few days and then I started getting the misfire again and the emission control light came back on.

    I took it back to AUDI and the diagnostics came back as saying that there 'might' be a problem with the fuel injectors and that the Lambda sensor 'might' need replacing. If they had said they definately know it was the injectors then I would go ahead and get the work done but they want a lot of money to first investigate if it is that and then a load more to replace them.

    Would faulty injectors cause these symptoms?...wouldnt I experience the misfire all the time and not only at start up?

    Would a faulty Lambda sensor cause these symptoms?

    After googling the problem I have tried putting fuel injector/ fuel additive in the petrol but it hasn't helped.

    Thanks
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  3. Solz
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    Solz New Member

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    [Jul 21, 2012]
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