What should I do if the vehicle is transferred and the exhaust gas is not up to standard?

Replace the spark plug. Both old and new can be used, as long as the electrode points are cleaned with sandpaper and the gap is adjusted.

2. Adjust the ignition time. Delaying the ignition time will obviously reduce the NO content in the exhaust gas. Due to the delay of ignition time, the combustion time in the combustion chamber will be shortened, the maximum combustion temperature will be reduced, and the emitted hydrocarbons and nitrogen oxides will also be reduced.

3. Clean the throttle with cleaning agent.

4. Switch to No.97 gasoline or No.97 ethanol gasoline.

5. Before filling out the form at the inspection station and waiting for the inspection, be sure to keep the car idling and hot.

6. Use automobile exhaust purifying agent.

7. Clean the distributor contact and distributor contact.

8. Clean the air filter. If it is too dirty, it is recommended to replace it.

9. Clean the three-way catalytic converter and oxygen sensor. After the three-way catalytic converter was removed, I washed it with tap water. At first it was brown water, but later it was fine. Both ends are washed.

10, high-speed pull-end. When the engine rotates at high speed, it can clean up the carbon deposit of the engine and make the three-way catalyst in the exhaust pipe unblocked, so that the three-way catalyst can work more effectively.

1 1. Add some water to the exhaust pipe with a high-pressure pound at the car wash near the inspection station.

12. Before the test, keep the engine speed at 4000 rpm and run 1-2 minutes before the test.