Help Pass FAQ's More FAQ's Assistance About Us Links
 

Things you can do to help your car pass a
Smog Check



 

The California Department of Consumer Affairs/Bureau of Automotive Repair (DCA/BAR) recommends that you refer to your vehicles owner’s manual for information on how often to service your car. We hope you'll also use the following tips that will help save gas, keep California's air clean and help your car pass its Smog Check:

#1. Make sure your tires are inflated properly and check wheel alignment.

#2. Change your engine oil and oil filter regularly.

#3. Change your fuel filter regularly.

#4. Always refer to your owner's manual and use the motor oil and fuel recommended by the manufacturer.

#5. Change your air filter regularly.

#6. Keep your engine tuned.

#7. Check your emission control devices.

#8. Service your engine right away when warning lights go on.

#9. Check all hoses, wiring and belts.

#10. Check the PCV valve and breather elements.

Personal Visual Inspection of your vehicle
During your personal inspection at home, ensure all hoses and wires properly connected.  Make sure there are no visible fuel leaks.  You can refer to the Under Hood Emission Label. This label will allow you to determine which emission components your vehicle is required to have. 
If your engine is running rough or is misfiring, you can have a qualified Test and Repair Smog Stations take a look at your vehicle.

Gas Cap & Filler
Your vehicles gas cap and filler neck will also be inspected. They will have to be of proper fit and design. The gas cap must be able to hold pressure at factory specifications and the filler neck must not be altered to accept leaded gases. This test is to insure the vehicle is not polluting fuel tank fumes through the filler neck or using the wrong type of fuel. Most vehicles pass this portion of the test with no problems. If your vehicle's gas cap appears to be lose or broken it may not pass. You will more then likely then have to purchase a new gas cap and smog inspection in order to get your car smog certified. Most local auto parts stores carry gas caps for a variety of vehicles.

Ignition Timing
During this exam the smog technician will insure your engine is supplying electric current to the sparkplugs at the correct time in its cycle. Please note some newer vehicles do not require a timing check because of computer controlled timing systems. You can find out if your vehicle requires a timing inspection by reading the vehicles emissions label, normally located on the bottom panel of the vehicle's hood. If your vehicle does require this exam you can ensure passing it by performing it yourself at home. It does require the use of a timing light and minimal mechanical experience. Timing lights are available at auto parts stores in your area. Look at your vehicles "Underhood Emissions Label" for timing specifications and procedures.

EGR Valve
Some vehicles have to also undergo an EGR valve inspection.  Make sure your EGR valve is working properly - this helps control NOx.
 

Copyright 2010 - US Smog Check  All Rights Reserved