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high nox level


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08lynn
New User

Jan 11, 2014, 12:28 PM

Post #1 of 2 (1028 views)
high nox level Sign In

Have a 1993 Mazda B2600I.2.4L engine,198000 miles.Took to get state emission test. fail test.Are there somethings that I could check or do to help reduce nox level?Are there some additives to put in fuel to reduce nox level?


Hammer Time
Ultimate Carjunky / Moderator
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Jan 11, 2014, 12:43 PM

Post #2 of 2 (1024 views)
Re: high nox level Sign In

There is no such thing as "Mechanic in a Can" so forget the additives.

Nox is caused by excessive combustion temperatures. You want to look for things like over advanced timing, engine overheating or inoperative EGR system.



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