Why does the motorcycle exhaust pipe keep ringing, and how to solve the problem that the motorcycle

It is necessary to determine the type and grade of the exhaust pipe according to the condition of the motorcycle and the size of the exhaust volume!

The general motorcycle in the factory are according to the design parameters of the engine and the power requirements to develop the specifications of the exhaust pipe, the user in the replacement of the exhaust pipe is best to replace the original exhaust that matches the car, imported large displacement motorcycle users will be according to the actual needs or personal hobbies to replace or modify the exhaust, the common carbon fiber exhaust, stainless steel modified exhaust, aluminum alloy exhaust and so on! But no matter what kind of exhaust pipe has little to do with the power of the engine and the normal working condition, at most some exhaust pipes have improved the low or high speed of the car!

For the phenomenon described by the landlord, I can tell you with great certainty: if your car is a riding bike, the clutch friction plate will not work! If it's a women's scooter, it's not good to have a pulip or a belt.

That's the silencer that cools down in high temperatures.

So you'll hear the sound of the bell and it's okay and it's normal.

The reasons for the loudness are as follows ---with how to deal with it) 1.Blockage --- removal of carbon deposits.

2.Corrosion or bump with external cracking --- weld repair.

3.The internal silencing filter is crushed--- restructured or lengthened.

4.The inner partition is welded --- dismantled and repaired.

5.If the exhaust pipe and the exhaust duct of the cylinder block are not tightly connected--- fasten the screws or replace the interface pad 6Improper combustion--- check the fuel as well as the oil circuit or circuit.

The main reasons for the exhaust pipe of a motorcycle are as follows:The root cause is that the combustible gas enters the exhaust pipe and ignites again in case of high temperature.

1. Temperature resistance: After the coating is applied on the metal surface. In 800 years of high temperature for long-term use, the coating performance and anti-corrosion performance do not change.

2. Energy saving: the product is self-drying after application. It saves the process and energy consumption required for curing and heating of general organic coating baking paint.

3. Wear resistance: The bonding strength of the coating with cast iron, A3 steel, aluminum alloy and other metal substrates reaches the bonding level of organic paint.

Coating process requirements:

Preparation before the use of the coating: The coating should be stirred well before use. Do not pour out the dispensing bottle before stirring. If it is to be used in separate bottles, it should be done after stirring well. The stirred coating should be uniform and consistent, and there should be no lump residue.

If the coating is too thick, it can be diluted with a small amount of water, but it must be stirred well before use. Add 1% of water.

Preparation before workpiece coating: The coating is suitable for coating on cast iron, mild steel, stainless steel, aluminum and other metal surfaces.

1. If the ratio of oil and gas mixing ratio is too strong or too thin, it may cause insufficient combustion of gasoline in the cylinder, causing it to be ignited again in the exhaust pipe and continue to burn, forming a cannon. However, according to experience, if the gun is fired when the throttle is reduced instantaneously, it is generally caused by the mixing ratio being too thin. If the cannon is fired during normal driving, it is often caused by the proportion of oil and gas being too strong.

It should be noted that the vacuum carburetor generally has a concentration valve, and it is necessary to check whether it has been opened. The EFI truck, generally adjusted, will not appear mixed than its own confusion, but it does not rule out that there are problems in the measurement links such as oxygen sensing and pressure sensing, which are caused by the chaos of the fuel injection system.

2. If there is a gun in the process of refueling, many times it is a problem with the ignition system, the four-stroke internal combustion engine theoretically ignites once every two revolutions (when the piston is close to the top dead center), in fact, many motorcycles basically have to ignite once a week because of the phase sensor problem. That is, every time the inhaled oil and gas mixture is to do work, it must be ignited once, which is different from the continuous fire of the gas stove. Therefore, the motorcycle has relatively high requirements for the stability of ignition, and the ignition energy of each time must be consistent to ensure that the combustion is sufficient, if the ignition energy is too weak, or the fire is broken, it will cause the oil and gas mixture to be discharged into the exhaust pipe without burning or even burning, and then the gun is burned in the exhaust pipe.

In this case, it is obvious that the engine will not refuel or work properly, or the torque will be severely reduced. The common ones are that the spark plug is ablated, the spark plug is leaking, or the high-voltage package is not well insulated, or the ignition element is aging and unstable.

3. If the sleeve cylinder has been removed, it cannot be ruled out that it is caused by the failure to adjust the timing of the valve valve, or the valve clearance is not clutched, or the valve is not closed well, or the phase angle is unreasonable and other problems cause abnormal combustion, in this case, the engine work must be abnormal and needs to be readjusted.

4. The ignition advance angle is wrong, the ignition system is generally based on the boss of the magneto to judge the advance angle, some bosses are long, some bosses are short, and some are multiple bosses, such as the ignition of a single boss, you are directly installed on the double boss car, you can ignite and start, but you can't add oil, because there is one more fire, and the ignition angle is not correct. If it is an ignition with a long boss and is used on a short boss, it will also cause the ignition to be discharged again because the ignition time is too late, resulting in insufficient combustion and discharge into the exhaust pipe to burn again.

5. There is a problem with the quality of the added oil, such as too much water or other impurities in it, resulting in insufficient combustion. Or it is not good to drive in winter, and it is played many times before it is hit, and a lot of gasoline has been photographed into the exhaust pipe, at this time, there is a pile of oil in the exhaust pipe, so that the gun will be fired, but this situation will disappear by itself after using the car for a period of time.

What are the reasons for the exhaust pipe of a motorcycle?

What are the reasons for the exhaust pipe of a motorcycle? The more complete, the better!

The exhaust pipe is actually a deflagration phenomenon formed by the deflagration of a large amount of combustible mixed gas deposited in the exhaust pipe, which is then ignited in the exhaust pipe. The reason why there is a combustible mixture in the exhaust pipe is the reason why the exhaust pipe is discharged.

Ignition - whether it is a spark plug, a high-pressure bag, or an electronic ignition, as long as the engine can be de-ignited, the steam sucked in this working cycle can be discharged into the exhaust pipe without combustion;

Unburned – Maybe there was no problem with the ignition system, but for some reason it failed to start combustion, so the combustible mixture was discharged. For example, valve leaks, mixtures that are too thick or too thin, or ignition misalignment, and ignition that is too weak.

From the most frequent occurrence, it is still the most firebreaks, and then the mixed steam, which is often the most poor atomization.

The main reason for the discharge of the exhaust pipe is the excessive fuel supply (over-concentration of the mixture). Excessive fuel is not completely burned during the combustion process, and the remaining fuel and the carbon monoxide produced after combustion, the combustible carbon monoxide gas is discharged through the exhaust pipe, mixed with air in the muffler, and can be re-ignited in contact with the high-temperature exhaust gas, and the burning gas expands rapidly and the sound of firing a cannon appears. The main reasons for over-concentration of gas mixture are:

1) The main measuring hole dispensing needle is unscrewed out too much. (2) The oil level of the float chamber is too high or the main measuring hole is too worn. (3) The choke valve is closed.

4) The float is ruptured or the needle valve is not closed tightly. (5) The air volume hole of the main nozzle is blocked. (6) The air filter is too dirty.

3. Exclusion method (1) Check the outside of the carburetor, observe whether there is oil leakage, remove the screw next to the carburetor or observe the oil level through the inspection window. (2) If the oil leaks or the oil level is too high, remove the carburetor cover, check whether the triangle needle valve is not closed tightly, whether the float is broken or improperly adjusted, and it should be repaired in time. (3) If the oil level height is normal, first check whether the choke is closed and whether the air filter is too dirty, and it should be cleaned in time.

4) Check whether the main hole dispensing needle is too unscrewed out, and it should be adjusted in time.

If you are not willing to find a professional maintenance master to repair, you can use a screwdriver to loosen a screw behind the exhaust pipe, pull out the silencer of the exhaust pipe, burn it on the stove, and then knock and knock to remove the carbon deposit, and then install it, and it will be solved.

There are several situations of starting and refueling the gas pedal when the exhaust discharge is discharged, the discharge of the gun and the throttle discharge when driving, there are all kinds of information on the Internet, unreliable such as gasoline is not good, there is a problem with the mixing ratio, the oil level is not suitable, the air filter is blocked, and even the air leakage timing is wrong, etc., there is a reliable high-voltage electricity or spark plug has a power-off phenomenon, and the valve seal becomes poor, it is recommended to find a maintenance worker to check, to see the car, depending on the phenomenon of the gun

First of all, check whether the exhaust pipe interface pad is broken. If that's fine. It's just that the muffling part in the middle of the exhaust pipe is broken. Only the exhaust pipe assembly can be replaced.

1: The fault of the carburetor leads to insufficient combustion of the mixture.

2: The ignition time is abnormal (3000 km new cars are unlikely to have this problem) 3: The electronic ignition is not good (new cars are also unlikely).

4: Most likely spark plug, replace it with a new, better one (10 yuan ocean).

The sound of exhaust discharge, which can be achieved by only changing the exhaust system, can be heard when the fuel is returned after speeding up, and the sound of continuous and short discharge can be heard.

This is the engine should be overhauled, the fuel is not completely burned, and the ** phenomenon that appears in the muffler is really helping you look forward to adoption

What is the reason why the exhaust pipe of a motorcycle is often fired; The master teaches you a trick to repair easily.

There is a loud noise in the exhaust pipe of the motorcycle, indicating that there is a problem with the sound attenuating part.

That's not the problem of the car, but the bad oil, the unstable composition of the gasoline.

Go to a professional repair shop for maintenance.

Get a new one, it's already broken inside.

1. Carburetor throttle knocking sound:The throttle constantly moves up and down in the mixing chamber body, and the gap is too large due to excessive wear, and when the engine intakes the air during the air intake stroke, the throttle produces a radial swing and hits the mixing chamber body, which will make a gurgling sound. This sound is almost inaudible when idling support, the sound is the largest when the throttle is screwed to 1 4 opening, and when the throttle is increased, the sound gradually decreases, and when the throttle is screwed to the end, the sound disappears.

2. Air leakage:Between the cylinder and the cylinder head, between the cylinder and the crankshaft box or the left and right crankcase blocks, if the fastening bolts are loose or the gasket is damaged, a chirping sound will be produced. After starting, the sound is not easy to hear when running at a constant speed; When stopping for inspection, obvious oil stains can be found from the air leak.

If this phenomenon is not serious, only the fastening bolt can be tightened, and when it is serious, the gasket should be replaced.

3. The knocking sound of the valve:If the valve clearance is increased due to improper adjustment or wear of parts, the valve train will produce a short, sharp knocking sound. This knocking does not change with the change in speed.

It can be eliminated by adjusting the valve clearance or replacing worn parts.

4. Piston ring noise:If the piston ring is tormented, the piston ring is insufficient, the piston ring is locked, or the piston ring cut gap, side clearance, and backlash are too large, when the engine is running, the burst gas will rush down rapidly, rushing into the crankcase surface and making an air leak knocking sound. Touch the spark plug with the change cone, listen carefully, and there is a clear thud and thump.

5. The sound of the connecting rod head bearing:If the connecting rod head bearing is overwhelmed with the bearing bore or the clearance is too large during assembly, the crankshaft will produce a radial impact and make a heavy clicking sound when it rotates. The sound is obvious when idling, and the noise is messy and difficult to distinguish when running at medium and high speeds.

When checking, do not start the engine first, and continuously step on the starting lever, you will hear a click, click; After starting, when idling, touch the lower end of the cylinder with a change cone, and listen to it with your ear, and there is a clear clicking sound.

It is impossible to silence the exhaust pipe of a motorcycle, only to reduce the sound.

The sound of the exhaust pipe of a motorcycle depends on the design of the internal sound-absorbing structure of the exhaust pipe and the size of the exhaust pipe outlet.

The principle of silencing of motorcycle exhaust pipe is that the air flow discharged by the engine passes through the porous pipe and partition in the muffler and winds back repeatedly, and the noise gradually decays to achieve the purpose of silencing.

Here's how it works:

1. Air intake: At this time, the intake valve is opened, the piston goes down, and the mixture of gasoline and air is sucked into the cylinder.

2. Compression: At this time, the intake valve and exhaust valve are closed at the same time, the piston goes up, and the mixture is compressed.

3. Combustion: When the mixture is compressed to the minimum, the spark plug jumps to ignite the mixture, and the pressure generated by the combustion pushes the piston down and drives the crankshaft to rotate.

4. Exhaust: When the piston goes down to the lowest point, the exhaust valve opens, the exhaust gas is discharged, and the piston continues to go up to discharge the excess exhaust gas.

The noise of the exhaust pipe of the motorcycle is caused by the sound of the carburetor throttle, air leakage, and the knocking of the valve.

Throttle knock of the carburetor:

This noise is barely audible at idle, and is loudest when the throttle is turned on to 1 4. Increase the throttle, the noise gradually decreases, and the throttle disappears in the end.

Air leakage: If the fastening bolts between the cylinder head, cylinder and crankcase or the left and right crankcase are loose or the gasket is damaged, there will be a "chirping" sliding and leaking sound. After starting, the sound is difficult to hear when running at a constant speed; When parking, visible traces of oil can be found from the air leak.

If this phenomenon is not serious, tighten the fastening bolts. If severe, replace the gasket.

The sound of the valve tapping:

If the valve clearance increases due to improper adjustment or wear of parts, the valve train will make a short, sharp knocking sound. This knocking does not change with the change in speed. It can be eliminated by adjusting the valve clearance or replacing worn parts.