Subject	SMOG question
Posted by	ChrisZTT(Sacto, CA) on April 26, 2022 at 4:25 PM
	This message has been viewed 252 times.
Message	So I just took my car to a SMOG test in CA. It failed. Could someone help me figure out why. New oxygen sensors with about 50 miles on them All the emissions equipment is on the car except the pre cats where changed to down pipes. No vacuum leaks I see and the idle vacuum pressure is about -530 on the AVCR. Changed oil and new fuel filter also. I put new 87 octane gas prior to testing and drove the car around to warm it up. Could it be bad cats or EGR? What would be my next step to figure this out? Hoping its not the cats as they are 1100-1200 each plus install in crappy California.
Follow Ups	SMOG question - ChrisZTT(Sacto, CA) 16:25:58 04/26/22 Since it fails on all 3 tests, the cats are not working - Bernie (NoVA) 20:58:17 04/26/22 Re: Since it fails on all 3 tests, the cats are not working - ChrisZTT(Sacto, CA) 21:03:54 04/26/22 I don't remember the timing. I can check later. (n/m) - ChrisZTT(Sacto, CA) 21:10:13 04/26/22 Cats should be colder in the front, hotter in the back right - ChrisZTT(Sacto, CA) 21:02:48 04/26/22 It should be hotter or at least the same at the rear... - Ted (92TT) 17:10:03 04/27/22 It idled on the lift for about 20 min prior to measuring. - ChrisZTT(Sacto, CA) 18:44:49 04/27/22 Please don't start to do random shit. - Bernie (NoVA) 21:45:58 04/27/22 Some answers - ChrisZTT(Sacto, CA) 01:54:37 04/28/22 Did they say what "Modified-Other emissions" was for? - Ted (92TT) 03:08:57 04/29/22 Down pipes. Going to wrap them and take somewhere else. (n/m) - ChrisZTT(Sacto, CA) 10:48:33 04/29/22 I thought about fabbing up some shields... - Ted (92TT) 22:29:52 04/29/22 More info - ChrisZTT(Sacto, CA) 20:22:12 05/05/22 How cats work: - Bernie (NoVA) 21:55:57 04/27/22 Re: How cats work: - robo (sebring1970) 01:48:50 05/06/22 Vid Link for Zed Cat Test - Cjw3 11:03:38 04/30/22 The cats need a 'Close to Stoch Mixture' to run. - Cjw3 10:08:07 05/01/22 Do you think 87, 89 or 91 octane would be better for testing (n/m) - ChrisZTT(Sacto, CA) 20:23:48 05/05/22 I herd lots of stories, nothing valid in my opinion (n/m) - Cjw3 06:27:02 05/06/22 Just a follow up... I PASSED! - ChrisZTT(Sacto, CA) 23:21:24 05/10/22 Awesome, congrats! Did you do anything new for the visual? (n/m) - Ted (92TT) 01:30:28 05/12/22 On the original cats? (n/m) - NytWolf 11:44:08 05/19/22
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