What s wrong with the four cylinder engine pulling black smoke, it s boring and fuel efficient

1. Reasons. 1.The flammable mixture is too thick.

2.There is too much oil in the engine fuel. 3.

Poor piston ring or crankshaft oil seal sealing. 4.There is moisture in the fuel.

5.Bad spark plug 6The air filter is too dirty.

2. Fault diagnosis and elimination.

1.For the inspection and diagnosis of excessive concentration of combustible mixtures, the carburetor and air filter should be checked.

2.The blend does not compare with the blend of the oil, or the wrong grade of oil is used. If the oil mixture contains too much oil or the oil quality is poor, the oil of the flammable mixture cannot be completely burned, resulting in black smoke.

The above phenomenon can also occur in two-stroke engines with separate lubrication and oil pump misalignment and excessive oil supply. At this time, the oil pump should be checked and adjusted according to the regulations to ensure that the lubricating oil is supplied proportionally at different throttle openings.

3.Excessive wear or breakage in a four-stroke engine, as well as too much oil in the crankcase, can cause oil to string into the combustion chamber and cause excessive oil in the mixture. If the crankshaft oil seal of a two-stroke engine is broken, it will also cause the oil from the transmission to string into the crankcase and enter the combustion chamber with the mixture.

4.One of the reasons for the mixing of water in the fuel is that the fuel in the fuel tank itself contains water, so the fuel tank should be cleaned and the fuel should be replaced. Another reason is that the cylinder gasket of the water-cooled engine is broken, and cold water enters the cylinder.

If, in the absence of leakage, the water in the tank is consumed too quickly, and the exhaust smoke from the exhaust pipe is slightly white, this is mostly the reason and the head gasket should be replaced.

Black smoke from gasoline engines is rare, black smoke is mainly not completely burned fuel in the combustion chamber, in the case of high temperature and lack of oxygen, diesel can not be completely and fully combusted, so decomposition and aggregation to form soot, it is a small diameter of the aggregate.

Because this aggregate reacts much slower than gasified fuel, due to the high temperature and anoxic environment of the combustion chamber, it cannot be fully burned again and is discharged through the exhaust pipe, so black smoke is presented.

The direct consequence of this phenomenon is that the fuel consumption of diesel engines is very high, the power is reduced, and at the same time, a large amount of carbon deposits exist in the piston and piston ring valves. In severe cases, the piston rings will be jammed, the valve seal is not tight, and the air leakage will be accelerated, and at the same time, it will also accelerate the wear of parts, thereby reducing the service life of the engine, so this aspect should be paid special attention.

Clean the oil circuit and replace the spark plug.

Reasons and solutions for the black smoke of single-cylinder diesel engines:

1. The black smoke emitted by the diesel car is because the fuel injector is blocked. The oil return is too large due to the blockage of the oil nozzle, and the oil does not reach full combustion, resulting in the black smoke of the diesel fuel that has not been burned through the exhaust pipe.

2. So first of all, it is certain that the main reason for the black smoke of the diesel engine is due to the incomplete fuel conversion rate. A clogged grease nipple can lead to a lack of fuel supply, resulting in a weak car.

3. The correct way to deal with it is to repair or replace the fuel injector, and then clean the oil circuit. However, the grease nozzle is a precision component, it is not recommended to disassemble it yourself, you can go to the nearest 4S shop or a maintenance shop with maintenance qualifications for maintenance and oil circuit cleaning.

Diesel is a complex hydrocarbon, and the unburned diesel fuel injected into the combustion chamber is decomposed by high temperature to form carbon black, and when it is exhausted, it is discharged along with the exhaust gas to form black smoke. Black smoke from diesel vehicles is the most common fault phenomenon, and it should be treated according to the specific situation when analyzing and diagnosing the black smoke fault of diesel vehicles.

PhenomenonAfter the diesel car turns on the starter switch, the exhaust pipe emits a large amount of black smoke, but the engine cannot start. This phenomenon occurs before the engine is running normally. There are several reasons why an engine cannot be operated, mainly in the fuel supply system and air intake system.

The diesel engine is not easy to start, which means that although the diesel enters the combustion chamber, for some reason the combustion chamber does not have the conditions for compression ignition, so that the diesel that has been injected cannot be burned or cannot be completely burned.

Dear, I will answer your questions for you, I hope to be able to sell this stove to help you! How to solve the problem that a single-cylinder diesel engine is bored with black smoke? Details are as follows:

The following is the solution to the black smoke of the single-cylinder diesel engine: 1. Fuel injector is blocked: the oil return is too large due to the blockage of the oil nozzle, and the oil fails to fully burn the diesel fuel that is not burned and discharges black smoke through the exhaust pipe.

The correct way to deal with it is to repair or replace the fuel injector and clean the oil circuit. The grease nozzle is a precision component, it is not recommended to disassemble it by yourself, you can go to a 4S shop or a maintenance shop with maintenance qualifications for maintenance and oil circuit cleaning. 2. Insufficient combustion

The main reason for the black smoke of the diesel engine is due to the incomplete fuel conversion rate, and the maintenance makes it fully combusted.

The single-cylinder diesel engine exhaust pipe discharges a lot of oil, and emits black smoke, and the engine is not strong The cause of the failure is the following methods

1. The engine does not emit black smoke, which means that the oil supply time of the high-pressure oil pump is wrong, and the oil supply angle is too large.

2. The utilization rate of the work caused by the large advance angle of the oil supply decreases, and the engine work is not brought into the best state, and it is consumed in the engine itself, causing the phenomenon of incomplete black smoke from combustion, lack of energy, and the engine cooling water boiling pot.

3. Adjust the advance angle of oil supply: increase or decrease the gasket of the high-pressure oil pump, you can adjust the advance angle of oil supply, reduce the gasket is to increase the advance angle of oil supply, and add gasket is to reduce the advance angle of oil supply. According to your engine situation, the first gasket should be added.

4. The engine exhaust pipe oil failure, is caused by the piston ring oil ring gap is too large, after the piston ring gap is too large, the lubricating oil from the gap into the cylinder for combustion, due to incomplete combustion, the remaining residue of the bridge is discharged from the exhaust pipe, and the exhaust pipe is black oil. The solution is to replace the piston ring oil ring to ensure the standard clearance.

If this is the case with this gasoline engine. This is mainly due to the torsion torque and insufficient power of the engine combustion and poor output. It is caused by more carbon deposits.

It is necessary to clean the throttle and fuel injector, replace the spark plug, and check that there is a lot of carbon in the engine cylinder, which also needs to be cleaned. There is also a need to check the three-way catalytic converter to see if there is a blockage, and there is also a need to use a computer to detect, the air intake sensor, and the data flow of the oxygen sensor to see if there is a problem. There is also a need to check the cylinder pressure of the engine to see if it is relatively low, and it is necessary to check the engine to see if there is a phenomenon of burning oil.

The reasons for the black smoke of the four-cylinder diesel engine: 1. The shape of the combustion chamber has changed. The manufacturing quality of the combustion chamber shape does not meet the technical requirements, so that the compression gap is too large or too small and the piston position is wrong, which will change the shape of the combustion chamber, thereby affecting the mixed quality of fuel and air, and making the fuel combustion conditions worse; 2. The oil supply is too large.

The oil supply is too large, so that the amount of oil entering the cylinder increases, resulting in more oil and less gas, and the fuel combustion is not complete. In addition, excessive working load, poor fuel quality, and low operating temperature will also cause black smoke from exhaust; 3. Piston rings, cylinder liners, etc. are worn. After the piston ring and cylinder liner are worn, the compression pressure is insufficient, so that the normal proportion of the mixture gas mixture changes at the end of the compression stroke of the cylinder, and the filial piety core makes the fuel burn under oxygen-free conditions, resulting in carbon deposit.