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aircare..(smog results).. question 200 1988

posted by  terranaj98 on  Sun Nov 26 16:19 CST 2006
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what makes a car.. go from 2ppm in 2005 to.. 387ppm of NOx? in 2006?







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    aircare..(smog results).. question 200 1988

    posted by  someone claiming to be Farm Boy on  Sun Nov 26 19:28 CST 2006 [RELATED]

    I presume that this is from an 'under load' test?

    Things that increas NOx:
    Failed catalytic converter
    Exhaust leak that sucks in fresh air
    Advanced timing

    Make sure there are no leaks and the cat is fully hot when tested, before giving up on the old cat.

    I question that it was ever actually 2 ppm. That sounds too low to be an accurate reading. I would like to have seen the calibration results on that analyzer that day.

    Burning premium gas may knock a few ppm off, but it won't get you down where you need to be.







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