280zx CA smog failure

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11-23-2011, 11:32 AM

davidjoe007

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280zx CA smog failure

Hi All,

My 1983 n/a failed the NO. It was way over. The egr is supposedly working... any advice would be welcome.

Thanks

11-23-2011, 11:36 AM

NismoPick

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Read: https://www.zdriver.com/forums/showt...ghlight=failed

11-23-2011, 06:05 PM

davidjoe007

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Thanks for the link. Took my car to a cool litttle shop and the fixed it. There was something wrong with the egr system. $225.00 and she passed with flying colors. Got my 2013 tag.

11-23-2011, 06:56 PM

NismoPick

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Glad it was simple. What specifically was wrong w/ the EGR? Clogged?

11-23-2011, 07:06 PM

davidjoe007

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The vaccum line was a bit cloged.

12-12-2011, 01:40 PM

Philbert

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Location: Pleasanton, CA

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Glad you got it working - I had a smog nightmare a couple years ago and it failed 3 times before passing (I did cap/roter/wires/air filter/plugs/rewired all injectors and cold start, and finally a new cat did the trick after all that.

I recently went through this with my 87 4runner and it was failing with high NO - I cleaned the EGR and it failed again. I got a new cat, and it failed. Then I looked closely and realized the EGR vacuum tubing was not to spec - I had hoses going the wrong way and the EGR was not doing its job. Re did the hoses and BAM! passed with flying colors.

CA emissions are always a fun adventure.....