When the newly bought moped fills the gas pedal, the sound is loud in front of it! What s the proble

It is impossible to tell if the sound problem is not audible, but the new car generally does not have a major problem, but it cannot be completely ruled out. If it is the sound of the engine, it may be caused by a large valve clearance, or a problem with the valve system components, or other faults in the engine, as well as a problem with the engine oil, or a leak in the exhaust pipe. If it is not the sound of the engine, it may be caused by loosening and vibration of the exterior parts of the car body, which need to be checked before it can be determined.

New motorcycles are warranted, if you suspect that the sound is abnormal, you can go to the after-sales inspection and consultation.

In fact, although the moped burns gasoline, and the performance is the same principle as that of ordinary motorcycles, the quality is certainly not as superior as that of motorcycles.

I also bought one in 2001, it is a silver bell brand, the engine is Yamaha technology, at the beginning because it was the first time to ride this kind of bike felt fresh, but after riding for 4 years, the sound is also very loud, but now I know what the reason is, first of all, the new car should be bought to pay attention to care, the maintenance should be maintained, and the other is that the correct way of riding is really important.

Start with 1st gear, and pay attention to the shift when to reduce the throttle and the gear should be completely hung up, can not hang half of the run, my car because I just didn't know how to ride, the gear is not correct caused by the engine gear breakage, when 1 minute later the engine phase is leaking, and then I cheekily said that the car itself is faulty to change one, hehe!

Later, with the help of my friends, I learned how to ride, and there was nothing wrong with the basic machine of the car. But it's really fuel-efficient, and it's not cost-effective to ride a 125 motorcycle!

The landlord said that the problem of the sound suggests that you call the car repairer to help you replace the spark plug, wash the carburetor and even the fuel tank to wash it must be better, the last point: the new car must not be overloaded during the run-in period.

To compare the same model and brand of the car, in the normal driving state, to make sure that the car you bought has this situation, refer to maintenance, pay attention, non-driving state with empty throttle, even if the throttle state, not necessarily a fault, or even normal,

Is it the gap between the magnetic gap of the motor and the stator) is too large. Find a specialty store and try a ride.

It is possible that the carburetor and platinum are malfunctioning or that the ignition time is too late. If the ignition time is too late, when the engine piston is very close to the top dead center, the spark plug starts to ignite, the mixture combustion lags, the combustion is incomplete, when the piston goes down and even to the exhaust valve is opened, the mixture is still burning, the expansion of the combustion chamber volume and the lag expansion of the gas, resulting in the cylinder pressure is not high, and the engine power is reduced.

The partially burned and expanded mixture may also return to the carburetor through the intake valve, resulting in a backfire, making a violent "Peng, Peng" sound, and black smoke from the exhaust pipe of the incompletely burned mixture. In the event of the above faults, you should go to the repair shop for repair in time.

When everything is normal in the vehicle, the noise will inevitably increase due to the increase in engine speed when refueling. When steering, the tires rotate to give the car body resistance, and when the speed of the vehicle is constant, the engine increases the power to overcome the resistance, and the noise increases. 2.

Press the accelerator pedal quickly, and the sound of the engine power increase should be smooth and free of lag; Carefully distinguish the sound of each engine speed.

The main noise is: valve sound (generally "clicking" sound), if it is large, there is a suspicion of top valve; All kinds of belt rotation sounds (generally "squeak" sounds), if large, may be the belt and the body friction; If the engine emits other friction sounds, it is doubtful that the sudden sound is masked. 3.

It is difficult to tell the exact place without hearing the sound on the spot, and it may be a problem with the exhaust pipe muffler, so it is recommended to go to the repair shop and let a professional technician listen to it.