BYD F3 neutral gear vigorously stepped on the accelerator to emit blue smoke and black smoke

Blue smoke is a symptom of burning engine oil, it may be valve oil seal leakage, cylinder wear is too large resulting in piston ring clearance, piston ring jamming may burn engine oil, after blue smoke must be checked every other week to check whether the oil is enough, not enough to add in time, the engine oil burns out and damages the engine It will cost a lot of money. If only the oil seal and piston ring are damaged, it is easier to do. The main reasons for this should be:

1) The oil level of the engine oil pan or air filter basin is too high; (2) The gap between the valve stem and the catheter is too large; (3) Long-term light load work of the engine; (4) The taper ovality of the cylinder exceeds the limit; (5) The piston ring is counterparted, and the end and side clearance are too large or glued in the ring groove; (6) The piston ring is reversed. FYI: Please set to .

The unstable operation of the engine, poor acceleration, gun backfire, and black smoke from the exhaust pipe indicate that the mixture is not fully burned in the engine cylinder, which is caused by many reasons. The spark plug should be checked for abnormal phenomena such as excessive carbon deposition and electrode ablation, and then check the working pressure of each cylinder. If the cylinder pressure is too low, the mixture will not be sufficiently compressed, resulting in poor combustion.

At this time, the head gasket, valves, and piston rings should be checked to analyze and judge the cause of air leakage. If none of the above steps are abnormal, the engine control system should also be checked. The reason for the blue smoke is that the engine oil enters the combustion chamber to participate in combustion, and the gap between the piston ring and the cylinder liner is large, and the oil enters through the gap; The piston ring is bonded in the groove and loses the effect of oil scraping; The piston rings are worn excessively, and the oil runs into the combustion chamber through the opening gap; The oil pan oil level is too high; The valves and tubes are worn out, and the clearance is too large.

The black smoke is due to the excessive amount of gasoline injected, which is related to the air flow meter, but the blue smoke is related to the burning of engine oil, if the vehicle is driving more, then it may be a problem with the piston ring.

Hello dear! The black smoke is not fully burned, and the blue smoke is the engine oil burned! I hope it can help you, please set it as! Thank you!

Hello friends, it may be that the three-way catalytic converter is abnormal or the oil circuit is dirty.

Bisen Calendar Yadi F3 ( Check price |Detailed explanation of the model) Causes of black smoke from the exhaust pipe: 1The combustible mixture is too concentrated; 2.

Excessive amount of oil in engine fuel; 3.Poor sealing of piston rings or crankshaft seals; 4.There is moisture in the fuel; 5.

Poor spark plugs; 6.The air filter is too dirty.

Troubleshooting:

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, it is a flammable mixture, and the oil cannot be burned completely, 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 of the engine, such as rotting and excessive oil in the crankcase, can cause oil to enter the combustion chamber and cause excessive oil in the mixture. If the engine crankshaft oil seal is broken, it will also cause the oil from the transmission to string into the crankcase and enter the combustion chamber with the mixture.

Black smoke from gasoline engine is rare, black smoke is mainly not completely burned fuel in the combustion chamber, in the case of high temperature and lack of oxygen, the oil can not be completely and fully combusted, so the decomposition and collection to form soot, it is a small diameter of the mountain aggregate, because this aggregate is much slower than the gasification of the fuel reaction rate, because the combustion chamber high temperature anoxic environment, can not be fully burned again through the exhaust pipe discharge, so the presentation is black smoke. (Photo by Chen Jie2) @2019

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BYD F3When starting, the idle speed is low, the black smoke is serious, the smell is pungent, the refueling is weak, and the idle speed is about 5 seconds, and the normal reason for the idle speed is: insufficient combustion, the spark plug needs to be replaced, and the front oxygen sensor is also broken. The above is the reason why the idle speed is low when the BYD F3 starts, the black smoke is sprayed, the smell is pungent, the refueling is weak, and the idle speed is normal for about 5 seconds.

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BYD F3 When the sedan car is moving, the idle speed is low, the black smoke is serious, the air closure is pungent, the refueling is powerless, and the idle speed is about 5 seconds, and the normal reason for the idle speed is: the combustion is insufficient, the spark plug needs to be replaced, and the front oxygen sensor is also broken. The above is the reason why BYD F3 starts with low idle speed, serious black smoke, pungent smell, inability to vomit for about 5 seconds, normal idle speed.

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Extension: Spark plug definition: The spark plug is a part of the ignition system, and its main function is to introduce the high-voltage electricity generated by the ignition coil into the locomotive, and then generate sparks between the electrodes to ignite the mixture.

Keep an eye on the light to keep the engine running. The spark plug is an important element that supports the quarrel of the gasoline engine worker.

BYD F0 cool car gas throttle when emitting blue smoke at low speed is okay In fact, you have been checked many times, there should be no problem with accessories, when the oil is good after using additives once, and then there is a problem, the problem may be here, the accessories are okay, the fault code is not, there is no burning problem left and the combustion problem caused by the impurities of the oil circuit and the moisture of the oil tank, and the long-term combustion is not good. You can use a high-efficiency detergent to run 500 kilometers on 2 fuel tanks. Only the oil circuit is dirty, this is undetectable.

It's not a big problem.

Hello, this situation means that the engine needs to be repaired.

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.

Cause 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 "abrupt" sound, it can be concluded that a small number of cylinders do not work or the ignition timing is inaccurate. 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.

1. The injector works poorly or is damaged, resulting in insufficient diesel atomization.

The main reasons are:

1) The pressure adjustment of the injector is too low;

2) The injector pressure regulating spring is broken or the card is issued;

3) Carbon deposits on the injector needle valve and valve seat, and the needle valve is stuck or worn too much;

4) 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.

2. The gap between the intake and exhaust valves is too large, which reduces the valve opening, or the parts of the fitting mechanism are loose, worn and deformed, the relative position of the camshaft gear and the crankshaft timing gear changes, and the valve opening and closing time is incorrect, resulting in insufficient fresh air in the cylinder. Solution: Valve clearance, valve springs and valve seals should be checked.

3. The exhaust back pressure is too high or the exhaust pipe is blocked. This situation will cause insufficient air intake, which will affect the air-fuel mixing ratio, resulting in excessive oil volume. Workaround:

First, there are too many bends in the exhaust pipe, which should be minimized; The second is that the inside of the muffler is blocked by too much soot and should be removed.

4. The plunger parts of the fuel injection pump are seriously worn, which makes the oil supply pressure of the oil pump rise slowly, which affects the normal fuel supply time, prolongs the fuel injection process, and affects the quality of fuel injection atomization, which is a common fault of black smoke from the exhaust of the diesel engine. Solution: The oil pump should be replaced in time.

5. The air intake is insufficient or the air intake pipeline is blocked. In order to find out the cause, the following checks should be carried out: first, whether the air filter is blocked; the second is whether the intake pipe is leaking (if this phenomenon occurs, the engine will be accompanied by a harsh whistling sound due to the increase in load); The third is whether the turbocharger is damaged.

Solution: Check whether the blades of the exhaust gas wheel and the booster wheel are damaged and whether the rotation is smooth and flexible; Fourth, whether the intercooler is blocked.

6. The wear of cylinder liner 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. Workaround:

Wear parts should be replaced.

Oil pump pressure, pressure limiting valve, air flow sensor, vacuum tube.