Is there any way to fail the test of automobile exhaust exceeding the standard?

Hello, there are the following methods for unqualified automobile exhaust gas detection:

1.Repair shop repair, this method is to replace all the parts that should be replaced, and then check the exhaust gas.

2.To clean the tail, the first thing to do is to deal with the injector.

3.If the fuel injector does not work, you need to change the three-way catalysis.

4.Adding cleaning agents to the fuel; Repair agent is added to the lubricating oil. Adjust the fuel injection pump appropriately. To add emission reduction agents to the fuel, it is best to install the energy-saving purification chip device of the vehicle and ship in the air intake system, and replace it if the parts are damaged.

5.Other small methods, replacing the spark plug and flushing the exhaust pipe with water, can change the exhaust gas in a short time.

The important indicator of whether the diesel vehicle exhaust meets the standard is the smoke value, and the level of smoke depends on the complete combustion degree of diesel in the engine, at present, the diesel fuel utilization efficiency of most diesel vehicles in the engine is not high, the combustion is not sufficient, and the diesel fuel that is not completely burned is discharged from the exhaust cylinder in the form of carbon particles, so most of the unqualified diesel vehicle exhaust detection is due to the high emission of exhaust black smoke value.

If the emission value of a diesel vehicle exceeds the standard:

1.The method is to check and replace the air filter element of the vehicle, so as to increase the air intake, increase the combustion, so that the engine burns sufficiently, and the smoke value will be improved.

2.The solution is to clean the fuel injector and oil pump in the fuel system, because the purity of the diesel fuel used is not enough, the fuel injector will be blocked to varying degrees, resulting in poor atomization and insufficient combustion. If the oil circuit is not cleaned for a long time, it will also lead to serious carbon deposition and an increase in the smoke value in the discharge.

3.The method is to use the best diesel exhaust purifier, which can effectively prevent and control the exhaust gas of diesel vehicles.

Hope it helps!

Vehicle exhaust gas detection passed:

1. Clean and replace the three-way catalytic converter;

2. Check the oxygen sensor and spark plug: after cleaning or replacing the three-way catalytic converter, there is basically no problem with passing the exhaust gas detection. But if it hasn't already passed, check the spark plug and oxygen sensor.

3. Clean the engine system: If the car is used for a long time, and the overhaul of the above three components does not solve the problem of exhaust emissions, the engine system should be deeply cleaned. For example, oil circuits, intake pipes, throttle valves, etc.

Hello, diesel vehicle exhaust exceeds the standard, and the exhaust gas detection is unqualified, there are the following steps to solve: 1. Replace the spark plug. , both old and new, as long as the electrode points are cleaned with sandpaper, the gap can be adjusted, and my own is the old spark plug replaced.

2. Clean the distributor contacts and distributor contacts. 3. Adjust the ignition time. It is important to remember that delaying the ignition time will significantly reduce the nitric oxide content in the exhaust gas.

Due to the delay in ignition, the combustion time in the combustion chamber will be shortened, the maximum combustion temperature will be reduced, and the hydrocarbons and nitrogen oxides emitted will be reduced. 4. Clean the air filter, if it is too dirty, it is recommended to replace it. Clean the air filter and fuel injector.

The main function of the air filter is to prevent the pollutant particles in the car from entering the internal structure of the car through the car's cold air system, thereby affecting the normal operation of the parts. Cleaning the filter in time can effectively prevent dust from entering the car parts and components, and avoid affecting the performance of other cars. After the fuel injector is used for a long time, it will lead to unstable oil output, and will also make the vehicle start slowly and shake, and the fuel will be burned in the process of incomplete, so that the exhaust gas will produce more magazines.

Therefore, it is necessary to replace the fuel injector in time to effectively prevent the exhaust gas from exceeding the standard. Hope it helps!

In general, three-way catalysts are used. Or a three-way catalytic converter, that is, the installation of purification equipment.

The first one is to replace and clean the spark plugsBecause the spark plug is an important part responsible for the ignition of the car. The old driver said that if you do not pay attention to cleaning or replacement for a long time, the accumulation and aging of carbon deposits on the spark plug will lead to incomplete combustion of gasoline and substandard emissions due to the reduction of spark plug ignition efficiency. Therefore, the owner of the car regularly inspects and replaces the spark plugs.

The second is the replacement of the oxygen sensor. Many car owners do not know what the role of the oxygen sensor is, in fact, the main function of this part is to detect the oxygen concentration of the engine exhaust gas, by detecting the oxygen content in the exhaust gas and judging whether the gasoline is fully combusted. If the oxygen sensor is broken, it will not be able to detect whether the exhaust gas meets the standard, which will cause the annual inspection to fail.

The third is a three-way catalytic converter. Basically, car owners should know that its biggest role is to filter and purify the exhaust gas, if it is not cleaned up for a long time, resulting in the accumulation of impurities in it, it may make the three-way catalytic converter lose its effect and cause the exhaust emissions to not meet the standard.

The fourth is the carburetor. The function of the carburetor is to atomize the gasoline, so that the gasoline can be fully combusted, if the carburetor is not cleaned for a long time, it may cause the gasoline atomization is not complete, so that the gasoline can not be completely burned in the engine, not only easy to accumulate a large amount of carbon deposits, but also cause the problem of unqualified emissions.

The car exhaust gas is not discharged, which is generally caused by carbon deposits, spark plug damage or fuel quality is not up to standard, so when we first monitor the unqualified, we must drive the vehicle out for maintenance, you can replace the fuel, clean the fuel tank or add fuel additives.

The exhaust gas is unqualified, and the vehicle needs to be reorganized, and the general maintenance method is to replace the three-way catalytic converter.

If the car is used for a long time, the car exhaust is easy to exceed the standard, and it is easy to fail in the annual inspection. In response to this problem, there is no need to worry, the old driver said that only three methods can be done, I hope it will help everyone.

Detect oxygen sensor, oxygen sensor is an important component that affects vehicle exhaust emissions. It is very easy to break, so if the exhaust gas detection fails, you can first detect whether there is a problem with the oxygen sensor. Detect the three-way catalytic converter of the car, the three-way catalytic converter of the car is a whole, this thing will have an impact on the exhaust emissions of the car, the three-way catalytic is prone to carbon blockage or poisoning, failure, carbon blockage is reversible, can be cleaned to restore the activity, and poisoning failure, damage needs to be replaced.

Clean or replace the spark plugs.

Ignition system failures such as spark plugs and high-pressure packs will also cause vehicle emissions to exceed the standard, and poor spark plug working conditions will cause emission pollution to increase. The spark plug is also prone to carbon accumulation, and can also be reactivated by sandpaper cleaning or cleaning with cleaning agent, and the ignition gap can also be adjusted. In order to save money, many car owners will choose to go to private gas stations to refuel, and this kind of car is likely to fail the annual inspection during the annual inspection.

If the test is unqualified, you can't pass the testing table, you can replace the three-way catalytic converter, I hope it can help you, I wish you a happy life.

This wrong operation will lead to unqualified car exhaust testing, and many old drivers will suffer.

It is necessary to do tail gas treatment and check and replace the three-way catalytic.

First: clean up carbon deposits.

Generally speaking, as long as the car is used for a long time, the altar problem is a problem that many cars must face, how do other problems arise, gasoline is not fully burned in the process of combustion, there is a certain residue, and a large amount of carbon deposits will be formed near the three-way catalyst in the long run, and the serious carbon deposits of the car will affect the circuit blockage of the car, so that the car will have the phenomenon of exhaust gas not meeting the standard, so people should regularly clean up the rest of the car. Cleaning the three-way catalytic converter with oxalic acid is a better method!

Second: air filters.

Air filter, as the name suggests, is to prevent the air from polluting particles into the car's cold air system, the car does not affect the normal operation of the car's parts, after the car has been used for a long time, the air filter also needs to be cleaned regularly, after cleaning the air filter, it can effectively avoid the pollutants in the air, so that it will not affect the performance of the car, then the pollutants and impurities emitted in the car exhaust will be less, and the phenomenon of car exhaust not meeting the standard can be avoided!

Third: clean the engine.

Generally speaking, as long as the above two methods are used, the exhaust emissions of the car will have a significant improvement, if the effect is not obvious, you can use the last method, that is, to clean the engine of the car, but the owner is generally not a professional, so people need to send the car to a professional maintenance place to clean the engine, which can not only reduce the emission of car exhaust, but also maintain the car, it is the best of both worlds!

Annual inspection is a very good way, you can carry out a comprehensive inspection of the car, the car can also be repaired in a timely manner, which can improve the safety of the owner, but as people pay more and more attention to the protection of the environment, the inspection of automobile exhaust emissions must be more and more strict, if the annual inspection of the car is not up to standard, you can use the above methods to inspect and repair the car!

Replace the spark plug and clean the fuel injector: the spark plug ignition energy is insufficient, and the mixed oil and gas can not be completely burned, resulting in the HC content in the exhaust gas exceeding the standard, and the fuel injector has a poor atomization degree, and the mixed oil and gas is too concentrated may also lead to the pollutants in the exhaust gas being too high to pass the test.

Replace high-grade gasoline: Compared with low-grade gasoline, the advantages of high-grade gasoline are mainly reflected in the "two highs and two lows": higher knock resistance and power, and lower harmful substances and exhaust pollution in gasoline.

With high-grade gasoline, it is possible to pursue higher engine power and smaller displacement, and improve power and fuel economy. High-grade gasoline is cleaner, and the content of CO, NO, and HC pollutants produced after combustion will be greatly reduced.

Clean or replace the three-way catalytic converter: the exhaust gas is discharged through the exhaust pipe, and the three-way catalytic converter on the exhaust pipe is the most important external purification device in the automobile exhaust system, which can convert the CO, HC and other harmful gases discharged from the automobile exhaust into harmless carbon dioxide, water and nitrogen. Neglecting the maintenance of the three-ring catalytic converter for a long time will lead to the blockage of the three-ring catalytic converter, the ability to convert harmful gases will be reduced, and finally the exhaust emissions will not meet the standard.

If there is a problem with the three-way catalytic converter, you can buy a special cleaning agent to clean it, and if the blockage is serious, you can choose to replace it directly.

Hello 1Clean the three-way catalytic converter and oxygen sensor: If the car exhaust is not up to standard, the first thing that comes to mind should be the three-way catalytic converter and the front oxygen sensor.

Cleaning or replacing spark plugs: Ignition system failures such as spark plugs and high-pressure packs will also cause excessive vehicle emissions, spark plugs are wearing parts, the most prone to problems, and poor working conditions of spark plugs will cause aggravated emission pollution.

Deep cleaning of the engine: If the three-way catalytic converter and oxygen sensor are cleaned, and the spark plug is replaced, the exhaust emissions of the car are still not up to standard, and if this happens, the air flow is eliminated.

Keep the car hot, even if you wait in line, idle, don't close your head because you save a little fuel, start the car when there are two or three other cars in front of you before the test, and hit the throttle at high rpm for a few minutes. (Generally 3-5 minutes is fine, don't be stingy with that bit of oil at this hour), and then test the exhaust emissions must be searched and passed.

The truth is: the detection line on the cold car is the most unwise. The best thing about a three-way catalytic converter is that the temperature is 400 to 800 degrees, and it takes a long time to go from a cold car to 400 degrees. (The detection point warmly reminds the note that the NO exceeds the standard, and when the temperature of the thought is too high, the NO is easy to exceed the standard.) )

If the throttle temperature reaches more than 400 degrees, and it can be maintained at this temperature all the time.

The solution to the unqualified automobile exhaust gas detection: 1. Clean the three-yuan tung catalytic converter, which is the key to exhaust purification, which is prone to carbon deposition nano chong blockage or poisoning and failure, and carbon deposition blockage can be cleaned to restore activity, and poisoning failure and damage need to be replaced; 2. Before cleaning, the oxygen sensor has a great effect on exhaust emissions, and the carbon deposits discharged from insufficient combustion of the engine will adhere to its surface, which will cause the oxygen sensor to fail for a long time; 3. Replace high-quality gasoline, which helps to fully burn and can help improve exhaust emissions; 4. Check the working condition of the starting hole posture fighter, its poor working condition will affect the exhaust emissions, and the annual exhaust gas is unqualified, you can clean the internal carbon deposit and oil circuit of the engine.

Automobile exhaust gas testing is an important part of the annual inspection of motor vehicles, if the test is not qualified, the car will not be allowed to go on the road. So, what if unfortunately the car exhaust gas test does not meet the passing standard? Measures that can be taken include replacing or cleaning the three-way catalytic converter, cleaning the fuel injector head and replacing the spark plug, using higher grade gasoline or going directly to the depot for repair.

1. The three-way catalytic converter is an extremely important air purification device in the exhaust system, which can convert the toxic gas in the automobile exhaust into non-toxic gas. If the three-way catalytic converter does not operate normally, it is very likely that the exhaust emissions will not meet the standard.

2. The atomization efficiency of the fuel injector is not high, and the energy of the spark plug is insufficient, which may make the mixed oil and gas not fully combusted, and the exhaust pollutants exceed the standard.

3. Compared with low-grade gasoline, high-grade gasoline not only has high power, but also contains fewer harmful substances and has a lower content of exhaust pollutants.

4. If after inspection, there is no above situation, it is necessary to go to the car factory to find professionals for maintenance.