We're Hiring

Click Here to Apply

How to Prepare Your Car for an Emission Test in Chatsworth, CA?

How to Prepare Your Car for an Emission Test in Chatsworth, CA? | RM Automotive

Living in California means following some of the strictest emission standards in the country. If your vehicle doesn’t pass an emissions test, it could be a roadblock to registration renewal, and no one wants to deal with that headache. Whether you’re getting ready for your first emissions test or have been through it before, knowing how to prepare your car can make all the difference. In Chatsworth, CA, with local laws and regulations in mind, here's how to set your vehicle up for success.

Why Emission Tests Matter in California

Emission tests are not just a regulatory hurdle; they are critical in reducing air pollution and ensuring cleaner air for everyone. California’s Smog Check Program aims to cut down on the amount of harmful pollutants released into the atmosphere by vehicles, keeping the environment healthier and safer. Vehicles that fail to meet these standards can’t be legally registered, so staying ahead of the game is essential for drivers in Chatsworth and the greater Los Angeles area.

Now that you understand why these tests are important, let’s talk about how you can prepare your car to pass with flying colors.

1. Regular Maintenance is Key

One of the easiest ways to ensure your car passes its emissions test is by sticking to a regular maintenance schedule. If you’re already keeping your vehicle in top shape, you’re ahead of the game. Here are a few key maintenance tasks to prioritize:

  • Oil Changes: Dirty oil can cause your car to fail an emissions test. It’s important to change the oil regularly to keep the engine clean and performing optimally.
  • Air Filter Replacement: A clogged air filter restricts airflow to the engine, which can affect emissions. Replacing it before the test is a simple yet effective step.
  • Check Engine Light: If your "Check Engine" light is on, don’t ignore it. This light often indicates an issue that will cause your car to fail the emissions test, so address it with your local repair shop before the test.

By staying up to date with your vehicle’s maintenance, you’re already improving your chances of passing the emissions test.

2. Drive Your Car Before the Test

One of the lesser-known tips for passing an emissions test is to take your car for a good drive beforehand. Why? Cars perform better when their engines are warmed up, and this is especially important for emissions testing. Driving for 15-20 minutes before your test helps to:

Heat up the catalytic converter, which reduces harmful emissions.
Burn off any excess fuel and oil deposits that could interfere with the test.
This practice ensures that your car is operating at its best during the test, increasing the likelihood of passing.

3. Check the Gas Cap

Believe it or not, something as simple as a faulty gas cap can cause your car to fail an emissions test. A loose or damaged gas cap allows fuel vapors to escape, which increases emissions. Before your test, take a few moments to check the condition of your gas cap and replace it if it’s worn out or doesn’t seal properly.

4. Inspect and Replace Spark Plugs

Your vehicle’s spark plugs ensure engine performance. Old or dirty spark plugs can lead to incomplete combustion, which results in higher emissions. Inspect your spark plugs before the test, and if they appear worn or dirty, replacing them can help ensure your car passes.

5. Run an Emissions Pre-Test

If you want peace of mind before heading to your official test, consider having a pre-test done. Our repair shop in Chatsworth offers this service to check your vehicle’s emission levels and help identify any potential issues beforehand. If your car is close to failing, we can make the necessary adjustments to give you a better chance of passing the official test.

6. Use a Fuel Additive

Fuel additives can be your secret weapon when it comes to passing an emissions test. Available at most auto parts stores, these additives help clean your engine’s fuel system, reducing the amount of carbon buildup and lowering emissions. Add the fuel cleaner to your gas tank before the test, drive your car for a while to let it work through the system, and you’ll likely see improvements in your vehicle’s emissions.

When to Schedule Your Emission Test

While the state of California requires an emissions test every two years for most vehicles, don’t wait until the last minute. Schedule your test well in advance of your registration renewal date. This way, if your car doesn’t pass the first time, you’ll have enough time to address any issues and retest without feeling the pressure of a deadline.


Don’t leave your emissions test to chance. Get your vehicle inspected at RM Automotive, where our expert technicians will ensure your car is ready to pass the test. Schedule your appointment today!