What to Do If the Vehicle Fails Environmental Protection Standards?

[AaronFitz]

If a vehicle fails to meet environmental protection standards, the solution depends on the specific situation. Here are different approaches based on various causes: 1. Poor Fuel Quality: If low-quality fuel is frequently used, it can lead to excessive carbon buildup after combustion and may impair the performance of the exhaust after-treatment system, reducing its lifespan and increasing pollutant emissions, resulting in failed tailpipe emissions. Therefore, before the annual inspection, it is advisable to fill up with high-quality gasoline and drive at high speeds before testing. 2. Clogged Catalytic Converter: Frequent low-speed driving or the use of inferior fuel can cause the catalytic converter to clog or become poisoned and malfunction. In such cases, you can purchase professional cleaning agents to remove and clean the catalytic converter, or drive at high speeds for a distance. High-speed driving is particularly effective in cleaning the engine's fuel system and cylinders. Additionally, at high engine speeds, fuel burns more completely, helping to flush out dirt and impurities from the fuel system and remove carbon deposits from the valves, thereby unclogging blocked passages and achieving a cleaning effect.