How to Deal with Excessive Vehicle Exhaust Emissions?

[VonIris]

Methods to address excessive vehicle exhaust emissions include: 1. Restoring the activity of the three-way catalytic converter by cleaning carbon deposits from the catalytic converter and oxygen sensor to enable it to function effectively; 2. Cleaning or replacing spark plugs and air filters to improve engine performance; 3. Performing a deep engine cleaning to enhance engine conditions. Methods to check a vehicle's emission standard include: 1. Reviewing the vehicle's conformity certificate, which is provided upon manufacture and clearly states the emission standard; 2. Checking the vehicle's accompanying documents, where the emission standard can be found in the vehicle information section; 3. Examining the certificate of conformity, which includes exhaust emissions and specifies the corresponding emission standard; 4. Visiting the official vehicle environmental protection website, locating the public inquiry platform at the bottom of the homepage, and entering the vehicle's VIN code along with the last six digits of the engine number to check; 5. Inspecting the vehicle's environmental protection label, which is affixed to the inside of the front windshield and clearly indicates the emission standard on its reverse side.