What should I do if the vehicle inspection tail gas is unqualified?

There are several ways to deal with unqualified tail gas detection:

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. I replaced the old one with my own spark plug. )

2 Clean distributor contact and distributor contact.

3 Adjust the ignition time. (Delaying the ignition time will obviously reduce the NO content in the tail gas. This is very important, so please remember! 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. But it will cause the engine power to drop. Also known as the rotor. A small fire is a small fire. When is a good time? Adjust the burner to the limit, as long as it can run on the expressway around the city, reaching 100km/ h, because it is too late for the car to run, so it can be adjusted back after the test. )

4 Clean the air filter. (If it is too dirty, it is recommended to replace it.)

5 Clean the throttle with cleaning agent.

6 Clean the three-way catalyst 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. There should be other better and more thorough cleaning methods, such as banana oil and dilute hydrochloric acid, which can also be provided by riders to benefit the majority of riders)

No.7 is 97 gasoline or 97 ethanol gasoline.

Section 8 La expressway. When the engine is at a high speed, it can clean up the carbon deposit of the engine and make the exhaust pipe three-way catalyst unblocked, so that the three-way catalyst can work more effectively. )

Before filling out the form at the inspection station, be sure to keep the car idling and hot. The three-way catalytic converter is effective when the car is hot, and its working temperature is about 250-800 C. After running for dozens of kilometers, I received the test at the test station on time at 10.

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

12 uses an automobile exhaust purifier! (Add the automobile exhaust purifier to the fuel tank, run at idle speed for 20 minutes or drive for 5- 10 km, and it can meet the standard! )

Before 13 test, keep the engine speed at 4000 rpm and run for 1-2 minutes. Testing.

14 If all the above methods fail, just go to the garage, don't bother.