juanmejia1974

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Question Asked: High Nox
January 23, 2011, 05:50 AM
I'm having problems to pass emissions. I already took my van to a three trained technicians and they couldn't find anything wrong. The level of NOx is a 2.5 were it should be a 2. I really would apreciate any help on this matter. There is no codes stores at the computer. Replace a spark plugs, did a good tune up still failing.
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