What causes black smoke from the exhaust pipe after the car is started?

It indicates that the mixture is too concentrated and the combustion is incomplete. The main reasons are overload of the automobile engine, insufficient cylinder pressure, low engine temperature, improper adjustment of carburetor, blockage of air filter, individual cylinders not working and ignition too late, etc.

Solution: When eliminating, check whether the choke is fully opened in time, and overhaul 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. Dredging or replacing.

Answer; Normally, this is determined by the characteristics of the Cadillac ATS turbine engine, and the high proportion of oil and gas mixture in the cold car state leads to the production of black smoke due to insufficient combustion. The time is very short, no more than 15 seconds. Reason:

operating characteristics of a supercharged engine; The cylinder volume is constant, and the ratio of oil and gas mixture has a fixed standard, when ensuring that the engine works normally when the turbine starts, and the supercharged engine is single.

This situation is generally that the cold car will emit black smoke when it starts.

Not a big problem. It is common for fuel consumption per kilometer displayed on the dashboard to increase when the temperature is below zero in winter. To put it simply, the ratio of carbon, hydrogen and oxygen required in the chemical reaction of fuel is uneven, so black smoke will be emitted.

Don't worry, it's normal.

Black smoke from the exhaust pipe means that the exhaust gas contains too much carbon particles, and there is only one possibility for this to happen, and that is incomplete fuel combustion. The reason for incomplete combustion is mainly due to the excessive concentration of fuel mixture and incomplete combustion

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

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.

1. Black smoke after the car starts:

1. The fault phenomenon of black smoke is: when the engine is working, the exhaust pipe emits black smoke, and can smell the pungent gasoline smell, which is more obvious when accelerating;

2. The cause of the failure may be: the mixture is too thick; The spark plug is not working well; Ignition is too late.

Second, the solution to the situation of black smoke after the car starts:

1. Check the concentration of the mixture. After the symptoms of malfunction, first check the carburetor damper. When the engine is working normally, whether there is a phenomenon that the control mechanism is stuck or out of order and cannot be closed or opened, if so, it should be repaired or replaced;

2. Secondly, it should also be checked: whether the oil level of the float chamber is too high; whether the float is leaky or not, it cannot float; whether the main orifice needle valve is too open; Whether the air filter is clogged, etc. After the engine is turned off, look at the main nozzle from the carburetor, if there is oil flowing out or dripping, it means that the oil level of the float chamber is too high, and the tongue of the float should be properly bent upwards or an appropriate gasket should be added under the needle valve acne to adjust;

3. Check the float, if there is crackage and oil leakage, it should be welded or replaced. Note that the weight of the float will increase after welding, and it must be re-adjusted during installation to ensure the normal liquid level height. Check whether the triangle needle valve is not tightly sealed, etc., and replace it if so.

Check the oil filter, if there is any blockage, it should be cleaned or replaced;

4. Check the spark plug flashing situation. If the spark plug jumps weakly or abnormally, the mixed gas will not burn, and black smoke will also appear. Unplug the spark plug, the fire is normal and the spark is strong, indicating that the spark plug is not faulty; If the spark of the spark plug does not jump along the electrode, but jumps around, it means that the spark plug is not jumping normally, and a new spark plug should be replaced; If the spark plug has serious carbon deposit, clean it;

5. The engine exhaust line can be in the process of emitting black smoke, if there is a piece"Sudden protrusions"sound and"Fire"sound, it means that the ignition is too late. If the above situation occurs, it will be corrected in time.

There are many reasons for the failure of black smoke from the exhaust pipe of a car,1Due to the uneven or excessive oil supply of each cylinder of the high-pressure oil pump. The uneven oil supply will produce unstable speed and intermittent black smoke.

2.The quality of diesel fuel is too poor, it is not easy to catch fire, so that the exhaust gas emits black smoke, and at the same time, the combustion chamber and exhaust pipe are also prone to carbon deposit. 3.

The mixture is too thick, and the combustion is not enough! There are many reasons for this failure, high fuel pressure, damaged fuel injector dripping oil, poor ignition performance, inaccurate signal of water temperature sensor, oxygen sensor, air flow or inlet pressure sensor! 4.

The wear of cylinder liners and piston components is serious. When this happens, the piston ring seal is not tight, and the air pressure in the cylinder drops seriously, resulting in the diesel fuel can not be fully burned and black smoke is emitted, and the engine power drops sharply.

Black smoke from a car's exhaust pipe can be caused by incomplete fuel combustion. Check whether the air intake is insufficient, mainly to see if the air filter is clogged and whether the air flow meter is damaged. Check the working condition of the injector to see if it is caused by the poor atomization effect of the injector, and also pay attention to the fuel quality.

Check the working condition of each spark plug and ignition coil to see if the spark plug has not been replaced for a long time. This phenomenon is often accompanied by severe engine shake and lack of power, which is also a common failure.

1.Blue smoke from a car's exhaust pipe is usually due to a damaged valve oil seal or a damaged cylinder gasket that burns oil. That is, if the oil is consumed too quickly, or if too much oil is added, it will cause the oil to enter the cylinder, and the oil will turn blue after burning in the cylinder.

If the amount of white smoke is large and exists for a long time, and the coolant is consumed quickly, it is generally caused by a malfunction to damage the vehicle's engine head gasket. It is recommended to stop the car immediately and send it for repair as soon as possible. Excessive wear or damage to a four-stroke engine and excess oil in the crankcase will cause oil to flow into the combustion chamber, resulting in too much oil in the mixture.

If the crankshaft oil seal of a two-stroke engine is broken, the oil from the transmission will also be stringed into the crankcase and enter the combustion chamber with the mixture.

2.Black smoke from the exhaust pipe of the car indicates that the mixture is too thick and the engine is not fully combusted, resulting in a large number of carbon particles in the exhaust. The main reasons are automobile engine overload, insufficient cylinder pressure, low engine temperature, improper carburetor adjustment, blocked air cleaner, individual cylinder failure, late ignition, etc.

The exhaust gases produced by the complete combustion of gasoline mainly include carbon dioxide and water, as well as nitrides and sulfides, and if black smoke comes out, there is something wrong with the car.

3.See if there is a problem with the work of the engine. If there is a problem with the engine, it is usually about the spark plug and ignition coil.

Whether the spark plug needs to be replaced. If there are symptoms such as severe engine shake and lack of power, it can be concluded that the spark plug is the problem. In addition to refueling at regular gas stations as much as possible, car owners should pay more attention to the oil circuit and fuel to improve the cleanliness of the injectors.

The above is the answer to the question of what may be the cause of black smoke from the exhaust pipe of the car.

It may be caused by carbon deposits, or it may be caused by a blockage of the exhaust pipe, or it may be caused by a lot of dirt in the exhaust pipe, or it may be caused by thick engine oil, or it may be caused by the fuel consumption of the car.

It could be caused by the speed of the car, or it could be due to a malfunction of the engine, it could be due to a malfunction of the car's gearbox, or it could be because of the poor quality of the oil.

This may be because the exhaust pipe of the car is faulty, and this is also a very serious thing, so when we encounter this situation, we must send the car to a professional car repair shop to repair, and do not bring unnecessary trouble to ourselves.

The cylinder pressure of the car is very high, the pressure of the fuel injector is a bit high, there is a problem with gasoline, and it is necessary to hurry up and repair it when you find black smoke coming from the exhaust pipe of the car.

Hello, according to your problem, what is the problem of black smoke coming out of the exhaust pipe, specifically due to the following reasons;

Exhaust smoke is normally colorless, and there are three colors of fault, specifically white, black, and blue.

White smoke, the engine has burned antifreeze, probably due to the damage to the head gasket.

Black smoke, black smoke from a newly started vehicle is a normal phenomenon. The engine does not burn well, probably because the gasoline burns poorly due to the mismatch between the air intake and the fuel injection, resulting in black smoke exhaust.

Blue smoke, engine burns oil. The possible cause may be a damaged valve oil seal, or a damaged cylinder gasket.

Hope it helps.

Black smoke comes out of the exhaust pipe of a car because it hasn't been maintained for a long time, and the parts inside are rusty. That's why it causes black smoke from the exhaust pipe of the car, and that's my opinion on this matter.

It should be the reason for the incomplete combustion, because the exhaust pipe is connected to the engine, so it will emit black smoke.

It may be that there is carbon deposit, and the car is prone to carbon accumulation when it is often idling, so it is necessary to go to a professional maintenance shop to clean it up in time.

Automobile exhaust often emits black smoke for vehicles, there are several reasons for the black smoke from exhaust, the first is that the mixture is too thick, the car mixed vapor concentration is very little for the current EFI car, and the carburetor model is the most in the past.

<> exhaust gas emits black smoke, as the name suggests, the exhaust gas is not fully burned in the cylinder of the automobile engine, so there will be such a situation, theoretically speaking, there is less air, more gasoline, resulting in such a situation From the performance of the vehicle, the first situation is that the air passage is blocked.

Secondly, with the carbon deposition of the throttle and throttle, the channel area is reduced, resulting in a certain intake resistance inside the engine throttle, of course, from the first case, so the carbon deposition and the vehicle are inseparable, and secondly, the internal combustion engine is not very sufficient, so this will also happen.

But in this case, it is necessary to prompt the driver to pay close attention to the condition of the vehicle, which is more troublesome for the vehicle, of course, it is also related to driving habits, and the car exhaust smoke is also required to carry out relative maintenance services according to the vehicle's own condition and factors when it is used.

Now the temperature in winter is relatively low, white smoke from automobile exhaust is a normal phenomenon We first understand the main component of gasoline C8H18, when the engine is working, gasoline and oxygen in the air produce chemical reactions, the main products are carbon dioxide and water, in addition, because the nitrogen in the air in the combustion chamber under high temperature and high pressure its oxidation reaction to produce nitrogen oxides. Hydrocarbons and carbon monoxide in the exhaust gas are products of incomplete combustion. So the exhaust pipe will discharge a lot of water, but the temperature is relatively high in summer, the water is discharged in the form of water vapor, you can't see it, the exhaust pipe will discharge water when it's cold, if there is no water out of the exhaust pipe when it's cold, it means that the engine is not working well.

The above is a detailed interpretation of the problem, I hope it will help you, if you have any questions, you can leave me a message in the comment area, you can comment with me more, if there is something wrong, you can also interact with me more, if you like the author, you can also follow me, your like is the biggest help to me, thank you.

The fuel supply to the engine increases when the car is started cold, and the engine speed will increase for a period of time, which may lead to the generation of black smoke and body shaking.