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Thread: emission test fail!!

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  1. #1
    EAT DOG white_rice's Avatar
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    i failed my NOx ppm

    someone told me to clean the egr valve? what do u guys think

  2. #2
    LS Resurrection
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    Quote Originally Posted by white_rice
    i failed my NOx ppm

    someone told me to clean the egr valve? what do u guys think

    clogged egr? yeah you should try cleaning it. i seen lots of car fail cause of that

  3. #3
    Senior Member | IA Veteran
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    Quote Originally Posted by white_rice
    i failed my NOx ppm

    someone told me to clean the egr valve? what do u guys think
    No... Either your ports are stopped up or a bad egr....

    if your HC passed with flying colors then your cat is ok

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