Mainland traffic regulations stipulate that as long as the vehicle is driven for 6 years, it must be tested online, and the vehicle that passes the annual inspection can continue to be on the road, and the car that does not pass the annual inspection can be rectified three times. Annual inspection has become a very troublesome thing, and it has also become a heart disease for many car owners.
There is a female driver in Shanxi, Ms. Liu, who failed to pass the annual inspection three times and was angry and crying on the spot. Ms. Liu has a Volkswagen car under her name, which has been driving for 8 years and encountered some problems when participating in the annual inspection. The car failed at the first annual inspection because of a deviation in the headlights.
Ms. Liu drove the car to the repair shop to adjust the lights, and there was no problem with the lights during the second annual inspection, but there was a problem with the exhaust. Ms. Liu thought that the exhaust gas was not passed because the car had accumulated more charcoal, so he drove the vehicle to the repair shop to beat the hanging bottle and clean up the carbon deposit.
After cleaning up the carbon deposit, Ms. Liu sent the car to participate in the 3rd annual inspection, but she did not expect that the 3rd annual inspection was still unqualified. Three consecutive annual inspections, not through Ms. Liu's mentality will collapse, he asked the staff of the vehicle management office, the car is qualified when it leaves the factory, the oil added is also a regular two barrels of oil, with why the exhaust gas is not passed?
The mainland annual inspection is very strict, although the car is qualified, the oil is also regular, but as long as the exhaust is not qualified, the car still can not get on the road, and eventually had to be forced to scrap. The annual inspection restrictions in the mainland are very strict, and if the vehicle exceeds the standard for the first time and the second time, the annual inspection station shall inform the owner of the vehicle in writing of the parts of the car that should be repaired and adjusted.
When the applicant conducts another annual inspection, the hidden dangers of the car should be repaired and adjusted, and if the third annual inspection still exceeds the standard, the vehicle is likely to be forced to scrap. Many car owners find that old cars with an age of more than 8 years are easily stuck in the exhaust emissions level, how to quickly pass the exhaust gas detection?
First, replace the spark plug.
If the exhaust gas test shows that the hydrocarbon exceeds the standard, it means that the gasoline is discharged out of the car before it is burned clean. After gasoline is burned, only carbon monoxide, water and nitrogen are expelled, and very few carbon oxides are emitted. If the nitrogen oxide exceeds the standard during the annual inspection, there may be a problem with the ignition system, and it is recommended that the owner replace the spark plug, ignition ring and high voltage line.
Second, check the oxygen sensor.
If the carbon monoxide exceeds the standard during the annual inspection, it means that there may be a problem with the oxygen sensor, and the owner needs to check whether the service life of the vehicle is too long, resulting in the oxygen sensor not being sensitive enough or seriously aging. The service life of the sensor is limited, and when the oxygen sensor is not sensitive enough, it will be detected that the carbon monoxide exceeds the standard.
Third, recheck the EGR.
If the nitrogen oxide exceeds the standard during the annual inspection, the egr valve may be blocked or damaged, and the nitrogen oxide cannot be sprayed out of the car. In this case, check whether there is a problem with the egr valve, and replace the parts and the three-way catalytic converter if necessary.
If the exhaust gas is detected unqualified during the annual inspection, the simplest way is to replace the ternary catalytic converter. The three-way catalytic converter is an important exhaust gas filtration device in the exhaust system, which can convert the pollutants in the exhaust gas into harmless gases and discharge them out of the car.
If you want to pass the annual inspection at one time, you can replace the three-way catalytic converter in advance and check the oxygen sensor. When the exhaust emissions of the car are not up to standard, the owner can conduct targeted tests according to different problems, and regular maintenance should be done during the usual use of the car.
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