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    Seat Arosa 1.4 TDI 2003
  1. ken.edgeworth

    Seat Arosa failed NCT emissions

    no modifications and seems to be running very well.
  2. Just had my 98 seat arosa in for NCT and failed due to emissions. Readings were lambda...... 1.04 (not between .97 and 1.03) CO........ 0.47 (above .30%) HC....... 324ppm (above 200ppm) This was on retest and between tests i had fitted a whole new exhuast system complete with catalytic converter. Does anyone know what these readings mean and how i might fix the problem.

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