Subject	my NA Z failed nox a lot too, like 10 times..still hasn't
Posted by	inf on October 23, 2012 at 12:45 AM
	This message has been viewed 295 times.
In Reply To	failed....again.. posted by RonDeezy on October 22, 2012 at 06:24 PM
Message	passed. I did everything under the sun. The first time it failed like yours... after I suspected it was the cats making it fail I welded on new Magnaflow's... well after testing it the nox shot up to 1500+ppm. I then proceeded to clean the EGR pipes as well as test the solenoid and valve. Everything checked out, but the pipes were super clogged. I cleaned the pipes and it still was 1000-3000ppm! I've deduced the reasoning as this...the first time I tested it with stock cats there was still super clogged EGR pipes. The second time with new cats the welds had holes before the cats. So if I just cleaned the pipes instead of getting new cats it'd probably have passed. Now the thing has valve guide seal issues and I haven't had time to retest after sealing the pinhole leaks (3 of them on the side they were testing). I'm hoping my assumptions are correct.
Follow Ups	failed....again.. - RonDeezy 18:24:22 10/22/12 Re: failed....again.. - Cjw3 21:35:49 10/22/12 i have a feeling it could be my timing. - RonDeezy 21:56:18 10/22/12 Re: i have a feeling it could be my timing. - Cjw3 22:51:35 10/22/12 i set to 15 degrees. - RonDeezy 23:33:33 10/22/12 If you still have the EGR system there is 99.9% chance - njz 05:55:40 10/23/12 I'm not an emissions pro but.. - Drunkpunk082 23:42:27 10/22/12 i didnt mean a ton of sunlight. - RonDeezy 00:09:03 10/23/12 I'm not 100% sure what it effects... - Drunkpunk082 01:25:09 10/23/12 Re: I'm not 100% sure what it effects... - baggar11 13:49:28 10/23/12 my NA Z failed nox a lot too, like 10 times..still hasn't - inf 00:45:11 10/23/12 jeez man.good look with your smog adventure.ha - RonDeezy 01:38:19 10/23/12 just took a look at my passenger side vacuum lines - RonDeezy 04:11:08 10/23/12 $70.00 each Magnaflow Cats? (n/m) - njz 14:04:27 10/23/12 causes of high nox: & egr flow test - Dane (Houston) 13:40:52 10/25/12 thanks dane. - RonDeezy 01:04:02 10/26/12
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