Superior Auto Clinic
Did Your Vehicle Fail the Smog Test?
Smog Test Repair
That's okay, you are in good hands at Superior Auto Clinic. We will complete any needed repairs and reinspect your vehicle.
The 4 most common smog check repairs:
- Bad O2 Sensor Replacement
- Bad Fuel Metering Adjustment
- Rich Fuel Mixture Adjustment
- Faulty EVAP System Part Replacement
- Apply for Consumer Assistance, this is a program offering income-eligible consumers assistance toward emissions-related repairs at STAR test-and-repair stations if their vehicle fails its biennial Smog Check inspection.
- Talk to the pro mechanics at Superior Auto Clinic about starting a maintenance plan. Regular maintenance can reduce smog check failures and high-cost auto repairs in the future.
If your oxygen sensor malfunctions it cannot properly monitor the exhaust and may cause overheating and loss of engine power and the release of toxic emissions. Superior Auto Clinic in North Hollywood can help you replace your O2 sensor quickly and get you back on the road fast.
Proper air-fuel measurement prior to mixing is necessary for a smooth-running engine. Most drivers discover their vehicles has a fuel metering problem when the "Check Engine Light" is displayed. At Superior Auto Clinic in North Hollywood we have state of the art computer programs that identify the exact check engine light diagnostic code and quickly complete the appropriate repairs.
Come to Superior Auto Clinic in North Hollywood to determine if your vehicle is putting out high levels of carbon monoxide due to a lack of oxygen in the combustion cycle. This can happen because of a faulty MAF sensor or oxygen sensor or because of leaking fuel injectors.
EVAP (Evaporative Emission Control System) problems occur when your vehicle is leaking gasoline vapors into the air. Superior Auto Clinic in North Hollywood can repair troublesome leaks or cracks in your vehicle's vacuum hoses, seals or gas cap.
Worried About the Cost of Smog Check Repairs?
Discover More About Exhaust Repair Services At Superior Auto Clinic in North Hollywood
Discover more about Smog Check, Testing & Repair
Learn more about Smog Checks vs Emissions Testing
OUR REVIEWS
North Hollywood, CA
Mitch Lusas, 10/27/2026We’ve been taking our cars to Paul at Superior Auto Clinic since around 2010, and he’s still the only mechanic I trust. I came in on a slammed Saturday morning with my 15-year-old car running rough, and they still made room to diagnose it; they confirmed is was spark plugs and ignition coils, caught dried-out gaskets and hoses, and texted me photos, a PDF report, and the full estimate to approve. They even checked that the engine was healthy enough to be worth investing in... that kind of honesty is why we keep coming back. They told me it would be finished Monday, but about five hours later they called to say it was complete with OEM parts, and when I got in, it drove like a new car. What I appreciate most is that they walk you through everything; what they found, what they did, and why. Paul makes it feel like he has a personal relationship with you, not just a repair shop. Diligent, fast, and genuinely friendly; if you need a mechanic in North Hollywood, go see Paul and his son Aram.
partners
