check egr system,make sure vacuum reaches egr valve when is supposed to
no Yes since it will not only fail the visual Nox emissions will be too high anyway and will fail the test. Most Ford Rangers have three convertors. One pre-convertor on each bank and then the main on shared by both. It's almost old enough to be exempt, I think it has to bee 25 years but check for your state, maybe it's less.
Bad EGR, Exhaust Gas Recirculation valve. That is what reduces NoX emissions
i would like to know the answer, as I'm buying a 93 Lexus that has failed on the NOX ANY IDEA?......
Nox is The abbreviation of Oxide(s) of Nitrogen. These are only produced at high burn temperature's. In a modern engine excess Nox emissions can be caused by a lean fuel mixture caused by a failed O2 sensor(s) Or A failed or pluged EGR valve
it is produced form animals, plants and factory.
nox is from exhaust temps too high or a cat. convertor breakdown.
A bad EGR valve would be the first place to look, because the EGR was invented to kill NOx. Improper engine timing, a lean air fuel mixture, and problems with the cooling system can also increase NOx.
Several things can cause high NOx: lean mixture, bad 02 sensor,exhaust leaks before the catalyst, a defective catalyst, high engine compression (carbon buildup), are among the most common.
Polypoetes nox was created in 1909.
Bona nox was created in 1788.
SOx ana nox
Kara Nox is 5' 4".