Failed Smog

Basic tech questions such as future setups, different turbo kits, car diagnosis, etc
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iamtheyi
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Joined: Fri Apr 23, 2010 11:36 am
Location: Fullerton, CA

Failed Smog

Post by iamtheyi »

I just failed smog with retarded numbers. My co2 and Nox are okay but my HC is 3-6 ppm over the legal limit. Any suggestions? I was running pulstar iridiums but swapped them out for coppers to see if it would do anything and still failed.

Put fuel injector cleaner in it, seafoamed the car, changed cap and rotor, wires are 7 months old. O2 sensor was also changed this year. Any ideas anyone?
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Kfred
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Post by Kfred »

Retarding your ignition timing should help get a more complete burn.
RIP Nate(480sx)...
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iamtheyi
Dreams of owning a 240!
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Joined: Fri Apr 23, 2010 11:36 am
Location: Fullerton, CA

Post by iamtheyi »

Wouldn't that create more HC though? advancing would help rid of it while Nox is increased. Isn't that how it works?
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