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08lynn
New User
Jan 11, 2014, 12:28 PM
Post #1 of 2
(1045 views)
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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?
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Hammer Time
Ultimate Carjunky
/ Moderator
Jan 11, 2014, 12:43 PM
Post #2 of 2
(1041 views)
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Re: high nox level
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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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