How to Deal with Vehicles That Fail Emission Standards?
2 Answers
For vehicles that fail emission standards, performing a major maintenance service to clean carbon deposits can resolve the issue. Reasons for failing emission standards: 1. Clogged catalytic converter and oxidizer: The most common reason for failing emission standards is a clogged catalytic converter and oxidizer, which may be caused by the use of poor-quality fuel leading to incomplete combustion and subsequent clogging of these components. 2. Engine carbon deposits: Carbon deposits in the engine are unavoidable for any vehicle. Increased carbon deposits not only reduce the vehicle's power and increase fuel consumption but also lead to incomplete fuel combustion, resulting in failure to meet emission standards. There are many reasons for carbon deposit formation, related to both fuel quality and driving habits.
I've been driving for many years. When emissions don't meet standards, I usually check myself first. Possible causes include excessive engine carbon deposits, clogged catalytic converter, or sensor malfunctions. Buying an OBD scanner to read trouble codes can quickly pinpoint the issue. For example, cleaning a dirty oxygen sensor may suffice, while an aged catalytic converter needs replacement. Getting a professional exhaust gas test at a repair shop gives more accurate results – don't delay and risk failing annual inspection plus fines. Regular maintenance like oil changes and air filter replacements helps reduce carbon buildup. If the car is too old with high repair costs, scrapping or switching to an electric vehicle may save money and be more eco-friendly. Modifying the exhaust system can temporarily solve the problem, but ensure compliance with China VI standards to avoid future complications.
