Subject	causes of high nox: & egr flow test
Posted by	Dane (Houston) on October 25, 2012 at 1:40 PM
	This message has been viewed 272 times.
In Reply To	failed....again.. posted by RonDeezy on October 22, 2012 at 06:24 PM
Message	Low EGR flow inefficient cats lean air fuel ratio over advanced ignition timing Egr flow test: install vac gauge to manifold pressure hold engine at 2000-2500rpm apply vacuum to egr (via borrow dampener vac signal or and pump) expect to see manifold vacuum decrease 4 inchs/psi of vac if there is no decrease tubes are clogged or valve is bad. if all above works, Test that the EGR vacuum control solenoid works. Houston Z www.houston-nissans.com
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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