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Five Ways to Prepare for a Smog Inspection

Posted on November 19, 2015 by James Florence

A vehicle can fail a smog inspection for a variety of reasons, so it’s important to be prepared prior to your appointment. Here are five common issues to address:

1. Warm up your vehicle. Since a smog inspection requires a vehicle’s catalytic converter to be hot, a cool engine can result in an unwarranted test failure. That’s why it’s a good idea to drive your vehicle for at least 20 minutes before bringing it to a smog check facility. If you know your wait time will be more than 30 minutes, keep your engine running to make sure it stays warm. Read more

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Savvy Consumer Tip: How to Pass a Smog Test

Posted on October 17, 2012 by Chris Bjorklund

Watch this video to learn what you can do to help your car pass a smog check on the very first try. Read more

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Why Cars Don’t Pass Smog Checks

Posted on September 18, 2012 by Chris Bjorklund

Do you know what the #1 reason is that cars don’t pass their smog check? According to Diamond Certified smog check experts, a “check engine” / “service engine soon” light ON and/or high tail pipe emissions are the main reasons. The state sets the maximum allowed limits for hydrocarbons, carbon monoxide, oxides of nitrogen, referred to as “NOX”. A worn out catalytic converter can also be one of the many causes for not passing.

Each smog check station has its own policy as to whether they charge you for a failure. The state does not regulate that. In general, shops set their own prices for all smog checks, other than the state regulated $8.25 for the Smog Certificate.  Read more

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