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Join Date: Oct 2005
Posts: 28
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California Smog Failed - 1978 911sc - Help!!!
Hi Guys,
My 1978 Porsche 911SC - Failed California Smog Check. Running too Rich - CO (%) Test MAX AVE MEAS 15 mph 1.36 0.17 2.38 25 mph 1.16 0.15 1.34 Any suggestion? Please Help (this crazy smog = money pit for nothing for over 30 y.o. car) Thanks, Alex email: avkipper@yahoo.com |
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08-26-2014, 09:20 AM
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Spiderman
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Been years since I lived in CA. I remember just having to tune a car to pass, even if it runs like S&%$. Then tune it back. I remember shops would even help, maybe its not that way anymore. Sorry for the piss poor advice, it is a stupid activity for a few old cars to be put through.
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Midnight Blue 08 Cayman S, Fun/Track Black 12 VW-GTI, work Mexico Blue 87 Carrera, sold, sad, not enough garage space. |
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08-26-2014, 09:26 AM
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Registered
Join Date: Dec 1999
Location: Novato, CA
Posts: 4,740
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Assuming your air pump is all hooked up, do you have a 3mm allen for adjusting the CO?
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08-26-2014, 09:43 AM
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Join Date: Oct 2005
Posts: 28
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I should have one or will find one...
What would be the procedure for rookie for adjusting CO? |
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08-26-2014, 09:51 AM
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Don't lean it out unless you know what youre doing. Too lean equals boom!
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jtp911 |
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08-26-2014, 10:26 AM
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Registered
Join Date: Dec 1999
Location: Novato, CA
Posts: 4,740
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Quote:
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08-26-2014, 10:27 AM
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Registered
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alex,
Sounds like you are going to have to do what I did when I lived in Utah. Search for the procedure here and get the wrench and a portable gas meter. This is what I used: I would lean it out until it met state specs and then literally limp into the test station. When I got home, I'd return everything back to Porsche specs. Every single stinkin' year I had to do this. I used the same place each time and the owner got a kick out of hearing how I had to pass. Now I guess I am a major environmental polluter in TN!!
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1978 911SC (not black, Mocha Brown) |
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08-27-2014, 10:21 AM
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Join Date: Nov 2001
Location: Santa Maria, CA
Posts: 1,051
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Quote:
The Cap'n |
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08-27-2014, 10:32 AM
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RETIRED
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CO up, HC should be low.....adjustments can equal them out. If it fails it could be the cat.
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1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
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08-27-2014, 12:43 PM
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Join Date: Nov 2001
Location: Santa Maria, CA
Posts: 1,051
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Both high and low CO can result in high HCs. The cat, while having some effect on CO, has a far greater effect on HCs. We need to see the full test report.
The Cap'n |
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08-27-2014, 01:06 PM
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Join Date: Feb 2013
Posts: 28
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On my 964 I just loosened my cat and created an exhaust leak. The inspector never noticed and it allowed it to pass with flying colors. Tightened everything back up when I got home.
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08-27-2014, 02:39 PM
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Join Date: Nov 2001
Location: Santa Maria, CA
Posts: 1,051
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I dunno where you live, or what kind of smog testing you put your 964 through, but an exhaust leak is readily detected by the BAR 90 machines used in CA and several other states, and will cause the car to fail if the leak is big enough to dilute the exhaust gasses.
The Cap'n |
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09-01-2014, 10:15 AM
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Money Pit
1978 Porsche 911SC 3.0l
Da cab
