Friday, November 8, 2013
Tips to Pass a Smog Test
Smog tests are designed to make sure vehicles are not emitting a higher than acceptable amount of exhaust into the atmosphere when they are driven. Failing a smog test can cause problems when you go to renew your vehicles registration. Some states and counties do not allow vehicles that fail a smog test to be registered until they can pass the test. Smog is fog that has been contaminated with smoke, exhaust and chemical fumes.
Good Maintenance
Keep your vehicle in good working condition. Cars tend to emit more exhaust gases when they are not running properly or are overdue for routine maintenance procedures such as oil and filter changes. You should also refrain from running low quality fuel in your vehicle right before you have an emission or smog test performed. Low quality fuel can cause your vehicle to emit more exhaust and run poorly. In some cases, such as if you believe your vehicle has bad gas in it, you may want to run a fuel additive through your vehicles fuel system prior to the smog test.
Check Engine Light
The check engine light should not be on. The check engine light indicates there is a problem with the vehicle and may cause your car to automatically fail the smog test in some locations. Therefore, you should make all necessary repairs prior to having a smog test done. If you suspect your vehicle is going to fail a smog test, you should take it to a certified mechanic and have it thoroughly checked out prior to your smog test.
Run the Car
Smog experts recommend making sure your car is thoroughly warmed up prior to arriving for your smog test. This means driving the car for 15 to 30 minutes before you take the car in to be tested. A warmed up engine will perform better. Another common suggestion is to make sure your tires are properly inflated before showing up for the test, as a low tire can effect the way your vehicle performs if the inspector has to drive the car.
Exhaust Systems and Aftermarket Components
If you live in an area with strict smog requirements, such as the state of California, it is probably a good idea not to alter your vehicles exhaust system. Aftermarket components such as catalytic converters and intake manifolds can cause your vehicle to fail a smog test or inspection. Keeping your vehicle properly functioning reduces your likelihood of failing a smog test.
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