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Grip It & Rip It
Join Date: Apr 2005
Location: SoCal
Posts: 1,222
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Will My Car Pass CA Smog
Pelican Brain Trust:
My car failed. It was fairly warm and then sat for 20-30 minutes before the tech ran it on the dyno. Is it fair to say it would pass if hadn't sat before testing. I say this because it passed the 2nd half of the test but not the first check it out: 1993 BMW 325i 130k miles...recent plugs, filters, coils etc... apologies...meant to post in off-topic 
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82 911SC (sold) Last edited by edgemar; 06-08-2014 at 02:14 PM.. |
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06-08-2014, 01:46 PM
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Registered
Join Date: Nov 2001
Location: Santa Maria, CA
Posts: 1,051
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HCs and NOx are really high at idle speed, and the HCs are too close to the limit at cruise. HCs are a result of incomplete combustion. What grade fuel are you running? If you're running 91 octane, try running it very low and adding a half tank or more of 87. Run it for 150-200 miles and have it tested again. Lower octane fuel burns more completely, and should drop the HCs significantly.
The Cap'n |
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06-08-2014, 03:20 PM
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Checked out
Join Date: Jun 2009
Location: On a beach
Posts: 10,127
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how many miles on the cat?
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06-08-2014, 03:40 PM
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Grip It & Rip It
Join Date: Apr 2005
Location: SoCal
Posts: 1,222
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Yes was running 91 and there is 130K on the cat...original to car.
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82 911SC (sold) |
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06-08-2014, 03:42 PM
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Under the radar
Join Date: May 2007
Location: Fortuna, CA. On the Lost Coast near the Emerald Triangle
Posts: 7,129
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You might try the BMW forum, there may be some experts there who may be of more help.
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Gordon ___________________________________ '71 911 Coupe 3,0L outlawed #56 PCA Redwood Region, GGR, NASA, Speed SF Trackrash's Garage :: My Garage |
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06-08-2014, 05:15 PM
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My Garage
1971 Porsche 911
Baja Bug
