CA smog fail high nitrous oxide
#1
CA smog fail high nitrous oxide
Just did smog on my 88 NA every test is good besides the NO (PPM) at 15mph MAX:565 MEASURED:812. At 25 mph it passed but barely MAX:522 MEASURED:496. Any clues what is wrong here? I do smell lots of fuel maybe my injectors are the problem . I'd rather do it myself than to take it to a shop.
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i had one that failed Nox due to a bad 02 sensor. there is a test port, and you can plug an LED into it, and watch the o2 cycle, or not in my case. new 02, and car passed easily
nox's started @800, retarding timing 10 degrees (back to stock) took 150 nox's off. then the o2 sensor took another 500 off or something
nox's started @800, retarding timing 10 degrees (back to stock) took 150 nox's off. then the o2 sensor took another 500 off or something
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NOx in our cars is caused by running very lean or having excessive timing advance. You are a thousand times more likely to fail due to HC than NOx.
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i've smogged something like 100 rotaries at this point, and only failed Nox once, because it was lean. timing does effect nox too, but its fairly minor
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Im having same problem, 1st, engine light didnt work on the idiotlight, so i used one next to it that worked.......then they did the actual text and failed horribly, they told me i needed new converter and they needed to see the eo number on it......
ok went out and had a new converter put in
back to smog...did the test and failed again---this time they are telling me its running too lean, and i might need to get an o2 sensor, or check my fuel filter......
I have a 1990 rx7 n/a
ok went out and had a new converter put in
back to smog...did the test and failed again---this time they are telling me its running too lean, and i might need to get an o2 sensor, or check my fuel filter......
I have a 1990 rx7 n/a
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Im having same problem, 1st, engine light didnt work on the idiotlight, so i used one next to it that worked.......then they did the actual text and failed horribly, they told me i needed new converter and they needed to see the eo number on it......
ok went out and had a new converter put in
back to smog...did the test and failed again---this time they are telling me its running too lean, and i might need to get an o2 sensor, or check my fuel filter......
I have a 1990 rx7 n/a
ok went out and had a new converter put in
back to smog...did the test and failed again---this time they are telling me its running too lean, and i might need to get an o2 sensor, or check my fuel filter......
I have a 1990 rx7 n/a
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Erosangel
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