What should I do if the car exhaust is unqualified?

In response to the call for environmental protection, the relevant departments have also issued corresponding regulations on automobile exhaust emissions, which is the so-called national IV and national V. So what should I do if the car exhaust is unqualified?

What should I do if the car exhaust is unqualified?

1. Replace the spark plug.

Both the old and the new are OK. The main thing is to clean the electrode points with sandpaper and adjust the gap. My own is the old spark plug replacement, and it works pretty well. Give it a try if you can.

2. Adjust the ignition time.

Properly delaying the ignition time will significantly reduce the amount of NO in the exhaust gas, which is very important, so be sure to remember! Due to the delay in ignition, the combustion time in the combustion chamber will be shortened, the maximum combustion temperature will be lowered, and the emission of hydrocarbons and nitrogen oxides will be reduced. Of course, *** is also there, which will lead to a decrease in engine power.

It is also the so-called fire head big fire head small is to turn the fire head small, what time is it good? Turn the fire head down to the limit, as long as you can run on the highway around the city, up to 100km h. Because the adjustment is too late, the car can't run, and it can be adjusted back after testing.

3. Clean the throttle.

4. Change to 97 gasoline or 97 ethanol gasoline.

5. Before testing, keep the car idling and hot up.

The three-way catalytic converter is effective at the high temperature of the hot car, characteristics: its working temperature is about 250-800 °C), I ran dozens of kilometers without delay and went directly to the testing station for testing.

6. Use automobile exhaust purifier.

Add the car exhaust purifier to the fuel tank, idle for 20 minutes or drive 5-10 kilometers, and you can reach the goal!

7. Clean the contacts of the distributor and the contact of the distributor head.

8. Clean the air filter.

Clean the air filter. Of course, 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 rinsed it with tap water, and at first it was coffee-colored water, and then it was fine, and the two ends were flushed. There should be other better and more thorough cleaning methods, such as whether banana water is also available, and please also provide it to the majority of riders.

10. Pull section high-speed.

The high-speed state of the engine can clean up the carbon deposits of the engine and the smoothness of the three-way catalytic converter of the exhaust pipe, so that the three-way catalytic converter can work more efficiently.

11. Add some water to the exhaust cylinder with a high-pressure pound at the car wash near the testing station.

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

The exhaust gas is unqualified, and there are three relatives and six relatives of the relevant departments waiting for you to take the money to dredge it.

If the vegetable oil *** does not produce exhaust particles. The third country will not be eliminated. How many car owners are there in the country. How much money does China's old Baixing save.

Unqualified exhaust gas to find scalpers!

What should I do if the annual inspection of the car is unqualified? Learn these 4 points, no need to look for scalpers.

The solution to the annual review of exhaust gas exceeding the standard is not passed:

1. Three-way catalytic converter and oxygen sensor.

If the engine mixture combustion is not sufficient, there will be a large amount of carbon deposits, which will be emitted with the exhaust pipe and will adhere to the three-way catalytic converter and the surface of the oxygen sensor. Therefore, cleaning the three-way catalytic converter and oxygen sensor will solve the problem of unqualified vehicle exhaust gas in many vehicles. If there is a problem with the added oil, the sulfur, lead and phosphorus contained in the oil will cause ternary poisoning, resulting in the failure of the three-way catalytic converter poisoning, which needs to be replaced, and the simple cause of carbon deposition can be cleaned with oxalic acid solution to restore activity.

2. Clean or replace the spark plugs.

Spark plugs, high-pressure packs and other ignition system failures will also cause car emissions to exceed the standard, spark plugs are wearing parts, the most prone to problems, poor working conditions of spark plugs will cause emission pollution to aggravate. 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. However, if the spark plug has an ablation failure or reaches the end of its service life, it needs to be replaced with a new one, and if it is replaced with a new one or with better performance, the engine condition will be much better, and the exhaust emissions will be improved.

3. Deep cleaning of the engine.

What should I do if the three-way catalyst and oxygen sensor are cleaned and the spark plug is replaced, and the vehicle exhaust emissions still do not meet the standard? If this happens, on the premise that there is no fault in the air flow meter, temperature sensor and other sensors, then it is necessary to do a major maintenance of the engine to clean the carbon deposit. Clean the throttle, oil circuit, air intake, fuel injector, etc., clean the carbon deposit inside the engine, and the working condition of the engine will be improved a lot, so as to avoid the problem of aggravated emission pollution caused by the poor working conditions such as incomplete combustion of the mixture.

AnswerGenerally 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 deposition will be formed near the three-way catalyst in the long run, and the serious carbon deposition of the car will affect the circuit blockage of the car, so that the car will have the phenomenon of exhaust gas not up to 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!

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!

First of all, there are two types of exhaust gas detection standards in our country, one is the double idle speed method, and the other is the simple working condition method. When the exhaust exceeds the standard, it means that our vehicle emissions exceed the national standard, so if you want to figure out the reason for the exhaust exceedance, you must first learn to read the exhaust excess report.

The main components in the exhaust gas are: carbon dioxide, carbon monoxide, nitrogen oxides, oxygen, hydrocarbons and water. The main emissions that the state restricts are carbon monoxide, hydrocarbons and nitrogen oxides. These three gases.

For the double-slack detection, the emission of nitrogen oxides is not restricted, only the emission of carbon monoxide and carbon hydrogen is limited, and a limit of the air-fuel ratio correction factor is added.

The above three national restrictions on the emission of gases, each of which has a different cause of each gas, is in the emission of each vehicle engine, after the three-way catalytic converter catalysis, under normal circumstances will be less than the national limit, when the vehicle emission system fails, individual components or three components will exceed the standard. The specific reason is to be analyzed by the maintenance technician, generally our driver or repair shop has no maintenance experience in this area, it is not easy to figure out what causes the exceedance. So now when the state restricts exhaust gas, many people are concerned about this problem.

For simple problems, if the excess is not serious, we can solve it by cleaning the fuel injector, throttle valve, and replacing the spark plug, but for complex problems, it is necessary to go to a maintenance shop with experience in this area for repair.

What should I do if the car exhaust is unqualified, the car repairer has made a move, and it is no problem to pass these points!

Look at those that are unqualified, you can wash the three-way catalysis or oil circuit and others.

Difference Between Nitrogen Oxides and Carbonaceous.

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.

Solution: Replace the spark plug;

Clean the distributor contacts and distributor contacts;

Adjust the ignition time. Delay the ignition time, which significantly reduces 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.

However, it will lead to a decrease in engine power;

clean the air filter;

Clean the throttle with a cleaning agent.

Precautions for detecting automobile exhaust:

1.Change some oil in advance.

2.Overhaul and replace the exhaust pipe.

If the vehicle has been used for a long time and the exhaust pipe has signs of corrosion, it is recommended to overhaul it in time, and replace the exhaust pipe if it does not work, so that it can better pass the exhaust test. Generally, the exhaust pipe is seriously corroded, and it is difficult to pass through the exhaust gas.

3.Ask your insurance company to follow up on the exhaust gas test.

Now to insure the vehicle, the insurance company will generally give a car review card to help you review the car, test the exhaust, etc., saving a lot of trouble, and the special channel helps to detect the exhaust gas smoothly. Ask your insurance company if they can help with exhaust testing.

4.Carefully choose to "support" to measure the exhaust gas.

Many car owners are not confident in the condition of their vehicles, and want to spend money to find a "support" to test the exhaust gas. However, according to the statistics of the DMV, about 90% of the vehicles can pass the exhaust gas test normally, so there is no need to spend money to find someone to test the exhaust gas, unless the vehicle is very old.

The qualified treatment methods for automobile exhaust are as follows:

1. Replace and clean the spark plugs.

The spark plug is an important component responsible for the ignition of the car. 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.

2. Replace 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.

3. Replace the oxygen sensor.

The main function of the oxygen sensor is to detect the oxygen concentration of the engine exhaust gas, and to determine whether the gasoline is fully burned by detecting the oxygen content in the exhaust gas. 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.

Precautions during the annual inspection of the car

1. Whether it is within the valid vehicle inspection period, the annual inspection date of the vehicle is known through the vehicle inspection and early grid standard, and the effective annual inspection date of the vehicle will be clearly stated on the inspection standard. This is the most intuitive way to know the validity period of the annual inspection. The owner can apply for the annual inspection 90 working days before the validity period of the annual inspection.

2. Deal with vehicle violations, vehicles have violations, and the annual inspection standard will not be issued after the vehicle inspection. Before the car inspection, it is necessary to check whether there are unprocessed violations in the annual inspection of the vehicle, and if there is, it needs to be dealt with in a timely manner and then go to the vehicle management office for annual inspection.

3. Self-inspection of the appearance of the vehicle should ensure that the appearance of the vehicle is clean and free of large-scale scars and traces of modification.

4. Relevant procedures and items before vehicle inspection, driving license, ID card, and compulsory traffic insurance policy. Before the car inspection, it is necessary to prepare the vehicle driving book, a copy of the compulsory traffic inspection (the insurance has expired or has not yet taken effect) and the ID card (no need for the owner himself). Vehicles must also be equipped with warning triangles and fire extinguishers.