125 Motorcycle Black Smoke, What s the Deal with Black Smoke from Motorcycles?

The motorcycle throttle can't be added, and the exhaust pipe emits black smoke! What causes this situation?

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 black smoke emitted by motorcycles is mainly caused by the excessive concentration of the mixture gas caused by various reasons. There are usually several reasons for this:

a) Air filter.

After the motorcycle is used for a long time, the air filter absorbs a large amount of dust, so that when the motorcycle engine is working, the combustible mixture is too thick due to the obstruction of the air intake.

Exclusion Method: Clean or replace the air cleaner.

b) Carburetors.

In addition to the mixture being too thick due to a clogged air cleaner, the carburetor itself also has black smoke coming out of the exhaust pipe. Of course, the problem is still that the mixture is too thick, because the carburetor idle measuring hole and the main measuring hole are not short to produce impurities during long-term use, resulting in the phenomenon of excessive concentration of the mixture, but there is also this phenomenon caused by the use of inferior gasoline.

Exclusion method Clean the carburetor and use *** gasoline.

c) Spark plugs.

The spark plug is weak and has a lot of carbon deposits, which will also cause the problem of black smoke emitted by the motorcycle.

Exclusion method Replace or clean the spark plug.

iv) Ignition time.

Ignition too late on a motorcycle will cause the combustible mixture to burn inadequately, resulting in too much mixture being discharged into the muffler, resulting in black smoke and gunshots. The problem of delaying the ignition time is generally caused by the aging of the electronic components in the igniter, and the timing gear is caused by the timing gear jumping after the motorcycle timing chain is loosened, and finally, the ignition time is delayed.

Exclusion method Replace the ignition of the same model, replace the gauge chain and adjust the ignition time.

1. Black smoke at idle).

The fault phenomenon is: the black smoke of the vehicle exhaust pipe is obvious when idling, the exhaust sound is dull (sometimes even suspected that the silencer is damaged), and the throttle must be increased to start when starting.

The causes of the failure are:

1) The idle speed measuring hole is too large; (2) The oil level of the float chamber is too high; (3) The starting concentration valve (damper) is not closed; (4) The gap between the oil needle and the main nozzle is too large.

Troubleshooting:

1) Replace the slightly smaller idle measuring hole.

2) Adjust the height of the float, and observe the oil level of the float chamber to 2 5 places of the float chamber is the normal oil level (note, when removing the lower cover to observe the oil level, the carburetor must be upright to prevent the gasoline from being spilled out, resulting in inaccurate judgment of the oil level).

3) There are three forms of starting enrichment valve: manual plunger enrichment valve, vacuum diaphragm plunger enrichment valve, and electric piston enrichment valve. Manual piston thickener valves are relatively simple to repair and can be resolved by cleaning the plunger, replacing the spring, or pulling the wire.

The vacuum diaphragm plunger thickening valve mainly checks whether the vacuum tube and vacuum diaphragm are ruptured and leaked. The electric plunger type thickening valve is generally due to the damage of the electric heating element and the failure of the power supply line, and the damage of the electric heating element must be replaced.

4) If the gap between the oil needle and the main nozzle is too large, the standard new accessories should be replaced.

Second, black smoke is emitted at high speed.

The fault phenomenon is: when the exhaust pipe is more than four or five thousand revolutions, the black smoke is obvious, and the high-speed power of the vehicle is obviously insufficient.

The causes of the failure are:

1) The air filter or air intake channel is blocked; (2) The cross-sectional area of the principal measuring hole is too large; (3) The gap between the main nozzle hole and the oil needle is too large; (4) The oil level is too high.

Troubleshooting:

1) Clean the air filter or replace the paper filter; (2) Replace the main measuring hole with a small cross-sectional area.

Hello landlord! First of all, I will introduce you to the types of smoke emitted from the exhaust pipe of motorcycles and the harm to your car;

1. Black smoke; Black smoke on motorcycles, improper adjustment of carburetor and blockage of air cleaner caused gasoline to burn inexhaustibly, resulting in black smoke and black smoke, I guess your car must be very waste oil during this time! Also pay attention to your spark plugs, some spark plugs are not very well ignited and will produce black smoke!

2. Blue smoke, the causes of blue smoke from motorcycles and the harm to the car; Some riders like to inject waste engine oil into the exhaust pipe, which is conducive to the maintenance of the exhaust pipe, but it is very polluting to the environment; If the landlord has not injected waste engine oil into the exhaust pipe, then the blue smoke is the phenomenon of burning engine oil! If the blue smoke is serious, replace the cylinder we are talking about, that is, the piston ring, the piston, the cylinder block, is a set, if the blue smoke is not serious, replace the piston ring, the piston will be OK Replace a set of about 120! If you change the piston and piston ring separately, you can get it for dozens of pieces!

There is also a kind of blue smoke that is most prominent in the morning, and the weather is cold and water vapor Hehe Maybe I'm a little wordy, but I hope it helps you and your car! Good luck!

The motorcycle throttle can't be added, and the exhaust pipe emits black smoke! What causes this situation?

Originally normal motorcycles, starting for the first time every day in winter, may need to pull up the damper, then the exhaust pipe suddenly emits black smoke, this is because the weather is cold, the mixed vapor atomization is slower than in summer, and the damper is pulled up and the combustible gas is thickened, so it is easy to emit black smoke, but this is temporary, just drive for a while after starting. However, if you start it for the first time every day, the spark plug is easy to accumulate carbon and turn black after a long time, which is easy to cause the spark plug to be cleaned or replaced.

Black smoke from motorcycles is generally due to 1Caused by excessive concentration of mixed gas due to various reasons; 2.Caused by an incorrect mixing ratio of gasoline to engine oil; 3.

Caused by excessive engine oil or poor oil quality; 4.Caused by the use of a two-stroke engine with separate lubrication; Wait a minute. 1.

Black smoke generally indicates that the combustible mixture is too thick; 2.Incorrect mixing ratio of gasoline to engine oil in the blend or the wrong amount of oil used; 3.When the amount of oil is too large or the quality of the oil is poor, the oil in the combustible mixture cannot be completely burned to produce black smoke; 4.

separately lubricated two-stroke engine; 5.The oil seal of the crankshaft of the two-stroke engine is damaged, and the oil in the gearbox rushes into the crankcase and enters the combustion chamber with the mixture, resulting in too much oil in the mixture; 6.The oil rings in the piston rings of a four-stroke engine are badly worn, or the oil is broken and rushes into the combustion chamber.

Black smoke from motorcycles is due to insufficient fuel burning.

Explanation of the cause: caused by insufficient combustion.

The spark plug is not working well.

Ignition is too late. > is there a solution:

First of all, check the carburetor damper, whether there is any stuck, malfunction and can not be closed and opened, if there is a repair or replacement.

Whether the oil level of the float chamber is too high, whether the float is leaked and cannot float, whether the main measuring hole needle valve is too open, whether the air filter is blocked, etc.

Check the spark plug jumping fire, if the spark plug jumping fire is weak or the spark jumping fire is abnormal, the mixed gas will not be able to burn, and black smoke will also appear. Unplug the spark plug, the jumping fire is normal, and the spark is strong, indicating that the spark plug is not faulty.

The engine exhaust line can be in the process of black smoke, if any"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.

Black smoke from motorcycles is mostly caused by the following five reasons:1clogged air filter; 2.

faulty spark plug (broken or not strong spark plug); 3.Ignition circuit failure affects minor ignition faults; 4.The oil level is too high, which affects the concentration of the combustible mixture; 5.

incomplete combustion; In general, black smoke emitted by motorcycles needs to be dealt with by a professional repair shop. If your car emits black smoke, push it to a nearby repair shop for repairs. The following is an introduction to the causes and solutions of black smoke emitted by motorcycles for car owners

1.Air filter blockage: the air fed into the combustion chamber of the motorcycle is almost zero, the concentration of oil and gas mixing ratio is too large, and the oil and gas mixture combustion is not sufficient, which naturally causes black smoke from the chimney.

Solution: Use a screwdriver to disassemble the lead filter shell, take out the travel roller filter element, clean it with cleaning agent or special tools, dry it and reinstall it. 2.

Spark plug failure problem: If the spark plug is broken or not secure, remove the carbon deposit or replace it with a new one. If the spark plug of the motorcycle burns irregularly, it is necessary to check whether the oil-gas mixing ratio is too concentrated.

3.Ignition circuit fault: Remove the spark plug and check the ablation of the intermediate electrode.

If the electrode looks dark, the cause of the concentration should be analyzed, and the oil level, oil needle height, and mix ratio should be adjusted. Demolition surplus 4The problem of high oil level:

When the exhaust pipe often emits black smoke, it is necessary to check the spark plug for carbon build-up and the air filter for clogged stains. The filters in the air filter need to be cleaned or replaced. 5.

Incomplete combustion: Whether the mixture is too thick or too thick, it will cause black smoke from the exhaust pipe. It is necessary to check the ignition situation and adjust the mix ratio to ensure smooth combustion.

Motorcycle black smoke is mostly caused by the following five reasons:

1.Blockage of the empty air filter; 2.Faulty spark plug (broken or weak spark plug); 3.

Ignition circuit failure affects minor misfires; 4.If the oil level is too high, the combustible mixture will be too concentrated; 5.incomplete combustion; Under normal circumstances, motorcycles emitting black smoke need to be dealt with by a professional repair shop.

If your car is smoking, push it to a nearby repair shop for repairs. Let's talk to the owner about the causes and solutions of black smoke emitted by motorcycles.

1.The air filter is clogged.

It is also possible that the air filter is blocked, and the air sent into the combustion chamber of the motorcycle is almost zero, resulting in an excessive concentration of oil and gas mixture, and the combustion of oil and gas mixture is not sufficient, which naturally causes black smoke from the chimney.

Solution: When we find that our motorcycle chimney often emits black smoke, we must pay attention to Weiqing Eggplant to repair it immediately to avoid major failures in the future. We just need to disassemble the air filter housing with a screwdriver, remove the filter element inside the air air filter, and then clean it with a cleaning agent or special cleaning tool until the filter is very clean, then dry, reinstall it, and restart the motorcycle.

2.Spark plug failure (damaged or insecure spark plug).

Solution: If the spark plug is broken or not secure, remove the carbon deposit or replace it with a new one. If our motorcycle often burns spark plugs, it means that the air-gas mixing ratio of the combustion chamber of the motorcycle is too high, so there is too much fuel in it and too little air gas.

If this happens for a long time, the spark plug will often get into the water, and frequent replacement of the spark plug is not allowed.

3.A faulty ignition circuit affects a minor misfire.

Solution: Remove the spark plug and detect the ablation of the intermediate electrode. If the electrode looks dark, the concentration is too high, and then analyze the cause of the concentration.

You can lift the drain pipe, open the oil screw, and see at what height there will be gasoline overflow. This height is generally the height of the oil level, which can be adjusted according to the situation. You can also adjust the height of the carburetor oil needle, that is, move the snap ring on the oil needle up one or two squares; The mix ratio can also be adjusted, and the air screw and the idle screw are required for joint adjustment.

Poor. 4.A high oil level can indicate an excessively concentrated combustible mixture.

Solution: When the exhaust pipe often emits black smoke outward, first check whether the spark plug has serious carbon deposits, and secondly, check whether the air filter is blocked by stains, and the filter element in the air filter is easy to be clogged by dust, so it needs to be disassembled, cleaned or replaced.

5.incomplete combustion;

Solution: Whether the mixture is too thick or too thick, it will basically cause the phenomenon of shooting. Due to too much oil and gas until the exhaust pipe encounters high temperatures, it does not burn twice**.

Poor ignition of the spark plug is also one of the causes of ignition. Due to poor ignition, the gasoline in the combustion chamber could not be burned completely, which affected the flow of excess oil and gas, and the exhaust pipe caused afterburner (shooting).

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