How to solve the black smoke from the exhaust pipe, and the solution to the black smoke from the exh

The presence of black smoke in the exhaust pipe of the car is due to the fact that the mixture is too thick, and the gasoline in the car is not fully utilized. It is normal for fuel consumption to increase. This problem has a certain relationship with the engine of the car, which is generally due to the abnormal operation of the car engine and the insufficient power of the cylinder.

This will cause the engine temperature to be too low, and the gasoline will not be able to turn into power quickly. At this time, you can open the fuel valve more so that the amount of gasoline will be used more. The carburetor will also run faster, which will naturally solve the problem of clogged air cleaners.

The car's engine returns to normal, and there is no black smoke from the exhaust pipe when accelerating. Of course, it is also possible that the cylinder does not work or the ignition is too late, at this time, the switch will be switched on and off a few more times to return to normal. If all the above methods have been used and there is no effect, at this time you must go to the 4S shop to clean the engine and remove the oil residue inside.

Start the car and listen to the sound, as long as there is no extra noise, it will return to normal.

The engine of the car has been used for a period of time and remember to clean it, which is helpful to protect the engine. At the same time, there will be no excess exhaust gas, and driving at this time will be particularly reassuring.

The exhaust pipe is a part of the engine exhaust system, the exhaust system mainly includes the exhaust manifold, the exhaust pipe and the muffler, generally to control the emission of engine pollutants The three-school catalytic converter is also installed in the exhaust system, and the exhaust pipe generally includes the front exhaust pipe and the rear exhaust pipe.

Black smoke is not good for combustion, if it is a gasoline engine, it may be a spark plug fire, the air filter is dirty, the piston ring is aging, the quality of the mixture is not good, if it is a diesel engine, it may be insufficient air intake, or the injector atomization is not good.

This is the main cause of black smoke from the exhaust pipe of the motorcycle, which can be repaired by adjusting a single screw.

The solution to black smoke from the exhaust pipe is as follows:

1. Check whether the air intake is insufficient, mainly to see whether the air filter is blocked, whether the air flow meter is damaged, etc.;

2. Check the working condition of the fuel injector to see if it is caused by the poor atomization effect of the fuel injector, and also pay attention to the fuel quality;

3. Lack of cylinder, that is, the engine has a cylinder that does not work or does not work well, check the working condition of each spark plug and ignition coil, whether the spark plug has not been replaced for a long time, this phenomenon is generally accompanied by the violent shaking of the engine and insufficient power, and it is also a relatively common failure;

4. Check the cylinder pressure, whether there is air leakage, whether there is too much carbon deposition in the valve or combustion chamber, etc.;

5. Check the ignition timing, check the gas distribution timing, and see if there is any deviation in the timing, such as in advance or later, and it is better to go to the relevant maintenance station for inspection when you find this step.

Black smoke from the exhaust pipe indicates that the engine mixture is too thick, resulting in insufficient combustion. When the air filter is too dirty, the spark plug is poor, the ignition coil is faulty, etc., it will cause problems such as black smoke from the engine exhaust.

1. First of all, check whether the air intake does not meet the requirements, check this need to see if the air filter is working normally, whether it is blocked, if not, and then see if the air flow meter is working normally, whether there is an error.

2. The second is to see if the fuel injection volume of the fuel injector is normal, whether the atomization degree of the fuel injection is up to standard, whether the problem is that the quality of the fuel injector is not up to standard, and it needs to be replaced with a better one, or it needs to be cleaned.

3. See if there is a problem with the work of the engine, if the engine has a problem, it is generally about the spark plug and the ignition coil, whether the spark plug has not been replaced for too long and needs to be replaced, if there is a violent shake of the engine and lack of power, and the symptoms of not being able to lift up the energy when accelerating, then it can basically be concluded that it is a problem with the spark plug.

4. Check the cylinder pressure, if the cylinder is leaking, the appearance of black smoke can be understood, of course, there is also a situation that too much carbon has accumulated in the valve and combustion chamber, and the carbon is discharged from the exhaust pipe along with the exhaust gas.

5. Finally, it is to observe the situation of ignition and fire distribution, whether the timing is not accurate enough, and if the timing is not accurate enough, black smoke from the exhaust pipe will also occur.

Judgment of black smoke and white smoke failure from the exhaust pipe of the car.

1. Black smoke from the car:

The mixture is too thick.

Fault phenomenon: black smoke comes out of the engine exhaust pipe when the car is driving, and the exhaust pipe has abnormal noise.

Causes of failure: 1. The ignition timing is inaccurate, which will also make the mixture incomplete; Or if a few cylinders of the engine do not work, there will also be a small amount of black smoke discharged.

2. The mixture is too concentrated, that is, the excess air coefficient of the mixture in the cylinder is too small, the combustion is incomplete, and part of the fuel is decomposed into free carbon at high temperature and discharged from the exhaust pipe, resulting in black smoke.

Troubleshooting: 1. If a small amount of black smoke is discharged from the engine exhaust pipe, accompanied by a rhythmic "sudden" sound, it can be concluded that it is caused by a small number of cylinders not working or ignition timing inaccuracy. You can use the cylinder-by-cylinder disconnection method to find out the non-working cylinder, or check and correct the ignition timing.

2. If a large amount of black smoke is discharged from the engine exhaust pipe, accompanied by the sound of firing guns, it can be concluded that the mixture is too thick. Check whether the choke is fully opened in time, and carry out high-speed maintenance if necessary; After the flameout, look at the main nozzle from the carburetor mouth, if there is oil injection or oil dripping, the oil level of the float chamber is too high, it should be adjusted to the specified range, and the main measuring hole should be tightened or replaced; The air filter is clogged and should be cleaned or replaced.

Second, the car emits white smoke:

Fault phenomenon: A large amount of white smoke is emitted from the engine exhaust pipe when the car is driving. One is milky white, the other is water vapor white smoke, and there are water droplets at the exhaust pipe mouth.

Cause of failure: A large amount of white smoke is emitted from the exhaust pipe when the engine is running, and there are two situations:

1. The exhaust pipe discharges milky white oil mist. The main reason is that the fuel is not vaporized well, and it is discharged from the exhaust pipe without combustion, resulting in milky white smoke. It is more common in winter when the engine is starting because of the low temperature and poor fuel atomization.

It usually disappears after the engine is started as the engine temperature increases.

2. A large amount of water vapor and white smoke is discharged from the exhaust pipe, and there are water droplets at the exhaust pipe mouth. The main reason is that the cooling water enters the cylinder or the water vapor formed by the gasoline containing water.

Troubleshooting: 1. When the engine is running, the exhaust pipe discharges a large amount of water vapor and white smoke, and should check whether there is water in the fuel tank, check whether the cylinder gasket is damaged, whether the cylinder block has cracks, and whether the cylinder liner sealing ring is good.

2. When a car parked in winter or rainy season starts for the first time, white smoke can often be seen. It doesn't matter, as soon as the engine temperature rises, the white smoke disappears and this condition does not need to be repaired. If the exhaust pipe becomes black smoke after the engine temperature rises, it indicates that the cylinder pressure is too low or individual cylinders are not working, which should be checked and eliminated.

1. Black smoke from the exhaust pipe, especially some older cars. The black smoke from the exhaust pipe is generally caused by the mixture being too thick and the engine is not fully combusted, that is, the air intake is insufficient, and when there is too much fuel, the engine is not sufficient in the combustion process, and the gasoline is not completely burned, forming a large number of carbon particles at high temperatures, and eliminating them"Soot", which is what we see as black smoke. There are many reasons for this phenomenon, such as the failure of throttle position sensors, air flow meters, oxygen sensors and other sensors.

If it is not repaired in time, it will be more fuel-intensive, easy to form carbon deposits, and the air pollution will be more serious.

Second, black smoke from the exhaust pipe of the car is a relatively common symptom, indicating that the engine mixture is too thick and causes insufficient combustion, which is a manifestation of engine failure. However, there are relatively many reasons for this, such as dirty air filters, poor spark plugs, ignition coil failures, etc., which will cause black smoke from the engine exhaust. There are three common causes of black smoke from a car engine:

1. The quality of the fuel used, when you use inferior gasoline, it is easy to have a similar situation, if you accidentally add inferior gasoline, there are more impurities, then the combustion efficiency will inevitably be greatly reduced, and the exhaust pipe will emit black smoke.

2. The air filter is blocked, resulting in excessive concentration of the mixture, which causes insufficient oxygen supply to the engine and produces insufficient combustion, and the exhaust pipe will emit black smoke, which is also relatively common.

3. When the ignition system of the car fails, it will also make the car emit black smoke, which is likely to be caused by spark plug leakage, high voltage too weak, fuel injector leakage and other reasons.

The black smoke from the exhaust pipe is first caused by the poor combustion of gasoline, first check whether the throttle injector and spark plug are too dirty, and it should be solved after cleaning.

: The black smoke from the exhaust pipe is mainly caused by the combustible mixture being too thick, the spark plug working poorly, and the ignition being too late. The mixture is too thick. Troubleshooting: If the air filter is dirty.

The black smoke from the exhaust pipe of the car is caused by insufficient gasoline combustion, and there are many reasons for the failure of this phenomenon, and the internal problems of the air intake system, fuel system, and ignition system may emit black smoke, how to solve the problem when the car emits black smoke?

Black smoke from the car solution.

1. The cylinder pressure of the engine is insufficient, resulting in the incomplete combustion of the combustible mixture, and the black gas will be discharged from the exhaust pipe. Check the sealing condition of the engine to see if there is any air leakage.

2. There are faults in the ignition system of the car, such as spark plugs, high-voltage weakness, ignition timing deviation and other reasons. It will affect the poor combustion of the engine, produce black smoke, and it is necessary to check whether the parts of the ignition system are faulty.

3. The throttle is carbon deposited or too dirty, and the intake pipe is blocked, which will also affect the combustion quality of the engine, so it is necessary to clean the throttle valve and intake pipe, and replace the air filter to ensure that the air intake is sufficient.

4. The major sensors of the engine also need to be checked, and the sensor failure will provide wrong information to the ECU, resulting in the injection time, ignition timing, air intake and other reasons will be affected, and it is necessary to check the working voltage and resistance of the sensor, and then read whether the waveform of the sensor is normal.

5. There is a problem with the quality of the gasoline used, such as the crude oil varieties such as benzene mixed with the oil, which will lead to black smoke caused by insufficient combustion of the engine, and the car needs to be replaced with fuel from a regular gas station.

The exhaust system is a very important structural component of the car, which is equivalent to a &ldquo respirator &rdquo. So do you know the exhaust system of a car? I think it's similar to our own nose and nostrils.

Of course, it is very important for the car, and a clogged exhaust pipe is also a fatal mistake. Is the question of black smoke destroying the bridge? Let's take a look at the reasons for the black smoke coming out of the exhaust pipe of Bian Xiao's car.

Introduction to Exhaust Pipe Black Smoke: Causes.

1) Check the resistance value of the antifreeze temperature sensor at different antifreeze temperatures of the engine and compare it with the specifications; Or use the ECU decoder to check and replace the faulty antifreeze temperature sensor.

2) Check the air flow meter or inlet pressure sensor, its main parameters should be in accordance with the specification.

3) Measure the engine idle fuel pressure, the value should be 250 kPa, and the fuel pressure is about 300 kPa when the throttle is fully open.

4) Connect the voltmeter or test light to the wiring harness plug of the cold-start injector, and check whether the working duration of the cold-start injector when the engine starts meets the specified value.

5) After unplugging the oxygen sensor harness, if the engine fault sensor emitting black smoke is faulty, it should be replaced.

6) Remove the injectors and check whether the injectors are leaking or stuck. If there is any abnormality, clean or replace the injectors.

Therefore, after reading the above introduction, friends must closely observe the subtle changes of their car, grasp all the information, and things will not be so complicated. The above is all the content of the exhaust pipe black smoke solution briefly introduced by Bian Xiao Automobile. I hope my friends like it.

Millions of car purchase subsidies.

1. Gasoline is not completely combusted, it needs to maintain a certain mixing ratio with air, ideally, if the air is a little more, that is, a little thinner, it can also be completely burned, but there will be other adverse effects. However, if there is less air coming in, that is, it is a little thicker, it will cause incomplete combustion, produce carbon particle analysis, and make people see black smoke. Therefore, the first time to check whether the air filter is dirty, or the air intake pipeline is not smooth, and the air flow meter and other devices are broken.

2. There is a problem with the quality of the gasoline added, if you have been refueling at a large gas station, the car has been normal, and one day you have changed to a small gas station to refuel, and found this problem, this situation indicates that the oil quality is not good and the combustion is not sufficient, and the problem can be solved by changing back to good oil. 3. The nozzle is an accessory that directly controls the amount of oil, if the nozzle is blocked, or the oil pump and sensor are problematic, or the oil atomization is not good, these can cause the proportion of oil and gas mixture to be abnormal, such as sometimes thick, sometimes thin, some places are thick, some places are thin, and eventually it will cause unsatisfactory combustion and produce black smoke. 4. The ignition system is abnormal, such as the ignition angle is wrong, resulting in unsatisfactory combustion, or the spark plug is ablated, and the side is jumping, which affects the combustion time and combustion effect and leads to the poor working of a cylinder, or the leakage of the high-voltage bag causes similar problems.

5. The oxygen sensor is broken, because the ECU will also adjust the concentration of fuel injection according to the signal of oxygen sensing to match the air-fuel ratio, which will cause inaccurate fuel injection concentration and unreasonable combustion. 6. There is a lot of carbon accumulation in the throttle or cylinder, and the carbon deposit will adsorb some gasoline on the top and release it from time to time, which will interfere with the control of the mixing ratio and cause incomplete combustion. 7. Internal problems of the engine, such as deviation in the timing of the valve mechanism, insufficient cylinder pressure, and air leakage.