What are the repair methods for excessive exhaust emissions?

[LeSara]

Excessive exhaust emissions can be repaired by: replacing the three-way catalytic converter. The three-way catalytic converter has a usage cycle, and its lifespan is closely related to fuel quality. If the fuel quality is poor and combustion is incomplete, a large amount of compounds will adhere to the surface of the three-way catalytic converter, which over time will cause the three-way catalytic converter to become poisoned and lose its purification function. Faults in the ignition system, such as spark plugs and ignition coils, can also cause excessive vehicle emissions. Spark plugs are wear-prone components, and poor spark plug conditions can lead to increased emission pollution. Spark plugs are also prone to carbon buildup, which can be cleaned with sandpaper or cleaning agents to restore their activity, and the ignition gap can also be adjusted.