What to Do If the Vehicle Fails the Environmental Protection Inspection?

[BarrettDella]

Solutions for failing the vehicle environmental protection inspection include: 1. Try replacing the spark plugs, either new or used ones, as long as the electrode points are cleaned with sandpaper and the gap is adjusted properly. 2. Adjust the ignition timing by delaying it, which will significantly reduce the NO content in the exhaust. This is very important. 3. Clean the throttle body with a cleaning agent, as it might be too dirty, leading to poor emissions. 4. Poor-quality gasoline may cause incomplete combustion, resulting in excessive exhaust emissions. Consider switching to 97# gasoline or 97# ethanol gasoline.