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Failed California smog check (max reading 1.0) with a 1.17 CO %. What simple repair can be done to get CO % under 1.0?

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  • lori_pearson Sep 13, 2009

    Thanks for the information. The car was driven at top speed limit on the freeway for 10 miles or so just prior to the smog check. Perhaps that helped a little bit.

    I just bought the product from Auto Zone that you suggested. I have to drive out the tank full of gas and then get the smog check again. We'll see how it goes. Thanks again.

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Two way's which will bring down emmisions are. Remove the air cleaner before you send it for the test. The second is before the test put it in second gear and floor it to about 3500 r.p.m. for around 1 to 2 mile's. It should pass no problem. When it come's out after the test replace the air filter. You can get additive for your fuel tank in any auto factor's which claim's it can lower emmisition's. I have tried it but I'm not convinced its of any use. It is not expencive so if you like you could add it as well.

Posted on Sep 13, 2009

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Hi There, Haven't tried it but this product has a guarantee: http://www.autobarn.net/ch05063.html Also - many claim they have passed by running the engine at high RPMs for at least 15 minutes directly before going in for the test. You could drive the highway or drive around town in 1st or 2nd to get the RPMs up. (just make sure you don't overdo the RPMs - you redline it for long it will destroy the engine. Good luck!

Posted on Sep 12, 2009

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