Why Did My Car Fail the Smog Check?

Why Did My Car Fail the Smog Check?

You’re probably aware that in California you can’t register your car until it passes a smog check. This has to be performed every two years. You have to obtain a passing grade unless your vehicle does not require a smog check. The auto mechanics in Solano Beach at Automobile Repair Shop San Diego can not only determine why your vehicle failed a smog inspection but also repair and retest it. The following are some of the most prevalent reasons why automobiles fail smog inspections.

Faulty O2 Sensor

Your vehicle may fail the smog test if your oxygen sensor is bad. This is because it will emit too much carbon in the exhaust. The oxygen levels in the exhaust are reported by the O2 sensor. The engine control module may put too much fuel in the combustion chamber if the data is inaccurate.

Bad Spark Plugs

Your engine will misfire if the spark plugs are damaged or worn out. This misfiring might result in your car failing the smog test. In order for your car to pass, it must have a fully functional ignition system. You may receive a failing grade if the spark plugs are defective.

Clogged Air Filter

Why Did My Car Fail the Smog Check?If your air filter is clogged, the combustion chamber will not receive enough air, resulting in a buildup of carbon in your exhaust. Your vehicle will fail the smog inspection as a result of this. The problem is generally solved by replacing the air filter.

Bad Catalytic Converter

A malfunctioning catalytic converter will prevent you from passing a smog test. Other symptoms of a failing catalytic converter include the smell of rotten eggs or an overheated engine. The catalytic converter, which is the portion of the exhaust system that deals with carbon monoxide, should be changed as soon as possible.

Faulty EVAP

Your gasoline vapors are kept in the tank by the evaporated emission control system (EVAP). You will fail the smog check if there is a problem with this system, or with the purge valves, vacuum hoses, or vents. Smog check failure can also be caused by a leaky gas cap.

Fuel Mixture

A rich fuel mixture in the combustion chamber might be caused by a defective O2 sensor, a failing mass airflow sensor, a malfunctioning fuel pump, or leaky fuel injectors. As a result of the extra gas being burnt away, there are more carbons in your exhaust. Your car will fail the smog test due to the extra carbons.

Contact a trusted auto repair shop in Solano Beach to see why your car failed the smog test. 

Smog Test in Solano Beach

For many years, Automobile Repair Shop San Diego has provided high-quality auto repair in Solano Beach. We give you hassle-free quotations and repairs in San Diego after a thorough assessment of your vehicle’s current issues. We’ll tow your vehicle for free and offer a rental car. Our shop will work directly with your insurance company to speed up the auto repair process. We’ll even pay up to $500 toward your deductible. Call (619) 330-0862 right now to discover more about how we can help you.

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