Jiangling Yusheng hurriedly refueled black smoke, Jiangling Shunda refueled black smoke

Incomplete combustion check the large pump.

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.

Oil spills. There are usually several reasons for oil leaks:

1. Valve oil leakage, valve oil leakage is generally because the valve is blocked or damaged, and the solution is to replace the valve.

2. The joint is loose, and the solution is to tighten the joint or replace the joint.

3. That is, you have problems with the pump and hydraulic oil pipe.

The solution is: send the JMC Shunda vehicle to a 4S shop or a professional car repair shop in time to clean the air filter, which can solve the situation of black smoke from the car engine, and if it cannot be solved, the car engine needs to be overhauled.

Smoke from a car's exhaust pipe is not very common, and it is normal when it is cold or when it is just started. However, if there is a large amount of black smoke from the engine of the JMC Shunda vehicle, it is definitely abnormal, which indicates that the combustion system of the vehicle is not working well and is caused by insufficient combustion.

Black smoke can generally be caused by fuel pump or fuel injector, usually the air filter diesel filter element should be replaced in time.

Injector pressure adjustment is too low; Broken injector regulator spring or hairpin; The injector needle valve and valve seat are decarbonized, and the needle valve is stuck or worn too much; The pressure reducing ring of the oil injection valve of the fuel injection pump is worn too much, which makes the fuel injector drip oil. Solution: Disassemble and clean the injector or replace it directly.

When accelerating, there are generally three colors of smoke from the exhaust pipe, and each color represents the difference in the problem that arises:

1. The phenomenon of black smoke is more common in carburetor cars, which is due to the fact that the amount of fuel injected by the carburetor model is not controlled by the computer, but controlled by the foot accelerator, and in some cases, too much fuel enters the cylinder and is discharged out of the car before it is combusted, which causes the black smoke we see.

2. The white smoke may be caused by the wear of the cylinder gasket of the engine, which produces a certain gap, resulting in a large amount of water from the heat dissipation system entering the combustion chamber. Water cannot be burned, and when heated, water vapor is generated, which is discharged directly from the exhaust pipe.

Black smoke means that the gasoline is not burned sufficiently, and the unburned gasoline is off! It's definitely a bit of a drain! Generally, it is caused by excessive fuel injection, and there are many reasons for the excessive fuel injection, so it is necessary to check carefully.

Indigestion of the car, is it EFI, serious carbon deposition in the car engine, or three-way catalytic failure; For carburetors, clean or replace the carburetor.

The treatment method for black smoke emitted by stepping on the accelerator in situ is as follows:

1. Clean the corresponding accessories to avoid clogging, air filters and fuel injectors are the accessories that are often cleaned;

2. Frequently inspect a series of accessories, such as system oil pressure, air filter, oil supply system, air intake system, air intake system and intake pressure sensor, circuit, spark plug and ignition line, oxygen sensor, flowmeter and related circuits, injector related circuits, pressure regulator and related circuits;

3. Repair and replacement of corresponding accessories, air filter, fuel injector, valve seal, cylinder barrel and piston matching, oxygen sensor, etc.;

4. Do not use fuel oil at will, and choose the quality of oil of the same brand. The choice of fuel model is also very important, do not choose different models at will;

5. Driving habits are also very important, if you often press the accelerator, the problem of black smoke from the car will be aggravated and often occur.

High-pressure oil nozzle, or high-pressure oil pump problem, you can calibrate and adjust it, [car questions, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Oil Pump Nozzle, [Car Questions, Ask the Car Master.] 4S shop professional technician, 10 minutes to solve. 】

Listen to me, the air flow meter is dirty, causing the car's computer to be inaccurate, it is recommended to change a new one, not expensive, more than 200 points, it seems to be clean, anyway, I am changing, the fourth son shop all kinds of faults, tossed for many days, did not understand, the last dry auto repair master to solve, the fourth son shop is not reliable! Hope it helps!

Dear, hello, what to do if JMC Shunda emits black smoke when refueling: In response to the question you raised, if JMC Shunda emits black smoke when refueling, it is often caused by the failure of the diesel engine fuel injector or the blockage of the intake pipe. It is recommended that you first check whether the diesel fuel injector is normal, and if it is damaged, it needs to be replaced.

At the same time, you can also clean the air intake duct to keep it clear. In addition, in order to ensure driving safety, it is recommended that you go to the repair station in time for inspection and maintenance. Performing the step requires professional action to ensure trustworthiness.

If you have any other questions, please feel free to ask me. Thank you!

Summary. Hello dear, <>

1. The air intake is not smooth, the air filter is blocked, and the air intake pipe is not smooth. 2. The grease nozzle does not spray, dripping oil. 3. The spraying time is late.

4. The timing of the gas distribution is incorrect. There are many possible reasons for the failure of diesel engine, but for a diesel engine, the reason for the failure of black smoke may be only one or several factors. How to judge and confirm the specific cause of black smoke from diesel engine is the key to troubleshooting.

The cause was found, and the fault was eliminated.

1. Confirmation and elimination method of the cause of the black smoke failure of the diesel engine caused by the problem of the oil supply system.

Does the JMC Yusheng S350 diesel supercharger emit black smoke when overfueled?

Hello dear, <>

1. The air intake is not smooth, the air filter is blocked, and the air intake pipe is not smooth. 2. The grease nozzle does not spray, dripping oil. 3. The spraying time is late.

4. The timing of the gas distribution is incorrect. There are many possible reasons for the failure of diesel engines with black smoke, but for a diesel engine, the reasons for the failure of black smoke may only be one or several factors. How to judge and confirm the specific cause of black smoke from diesel engine is the key to troubleshooting.

Answer: The cause of cavity grinding is found, and the fault is eliminated. 1. Confirmation and elimination method of the cause of the black smoke failure of the diesel engine caused by the problem of the oil supply system.

Hello dear, <>

Kissing is possible.

Hello dear, <>

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Hello dear! There is a lot of black smoke in the exhaust of the diesel engine, which is mostly caused by the incomplete combustion caused by the uneven or excessive oil supply of each cylinder, the insufficient amount of inhaled air, the poor atomization, and the early injection time. (1) Remove the air filter and observe the exhaust smoke.

If the situation of black smoke exhaust improves, the fault is caused by the serious dirt of the air filter; (2) Check whether the oil supply time is too early, if it is too early, it should be adjusted; (3) When the engine is running, the oil can be cut off by cylinder. When a cylinder is cut off, the engine speed decreases, the black smoke decreases significantly, and the knocking sound becomes weaker or disappears, indicating that the cylinder has too much oil. If the engine speed changes small and the black smoke disappears, it means that the injector spray quality of the cylinder is poor.

Once the faulty cylinder is located, disassemble and inspect the injector. If necessary, you can replace the new injector for comparison, if the fault disappears when the new injector is used, it means that the original injector is faulty. When the fault can not be eliminated by the above method, if the plunger tappet of the fuel injection pump has an adjustment screw, it should be checked whether the fuel injection of each cylinder is consistent, and the adjustment should be made if necessary.

When checking whether the oil supply of the fuel injection pump is too large and the unevenness of the oil supply meets the standard, it should be carried out on the test bench. I hope it can help you, please set it as! Thank you!

If the diesel car deposits carbon, it does not burn well and is prone to black smoke.

The turbocharger's intercooler is leaking or the pipe is leaking, causing black smoke.

Pro: Check out the EGR valve. Thank you!