There is a strange sound after the motor is turned on, and the motor keeps ringing after the car is

Hello, there is a sound after hitting the motor car.

Generally, it is the sound of the oil pump working, and the oil pump is also working while hitting the motor.

There is also a possibility that the exhaust pipe vibrates, which is normal.

Happy car. [Car questions, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello, there is a lack of oil in the starting motor, and the starting motor needs to be maintained.

I hope mine is helpful to you I wish you a happy car If you still have questions, please invite [car questions, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Hello! Are you talking about the only abnormal noise after starting, or do you mean that all working conditions have abnormal noise? If there is an abnormal sound after starting, you should check whether the suction of the starter is strong, I hope I can help you.

[Car questions, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Due to the viscous oil and poor fluidity, the oil cannot form a good oil film in a short time, and there will be a slight sound when the moving parts are in contact. After running for a period of time, the water temperature rises, the viscosity of the oil is normal, and the normal lubrication standard is reached, the sound disappears, which is a normal phenomenon and will not harm the engine. When the carbon accumulation reaches a certain extent, the valve can not be completely closed in place, and the valve clearance exceeds the normal adjustment range, resulting in abnormal valve noise, and in serious cases, it will cause insufficient pressure of the cold cylinder, difficult to start, and unstable idle speed after starting.

When the temperature rises, the carbon deposits soften, the valves close in place, the clearance is normal, and the abnormal noise disappears. In the case of a cold start, the oil pressure in the hydraulic tappet may not reach the specified value immediately, and the operation may be noisy for a short time. [Car questions, ask the car master.]

4S shop professional technician, 10 minutes to solve. 】

This problem is caused by the damage to the motor of the starter, the problem of the solenoid coil and the stagnation of the one-way clutch, in this case, you can first disconnect the thin connection wire on the starter, and see if the starter will still rotate, or the same problem, indicating that the starter itself is damaged or the electromagnetic switch is faulty. The starter no longer follows, which means that there is a problem with the key door or the starting relay, in this case, check the circuit and replace the start switch. Once the starter appears to follow the rotation of the car, it must be powered off or repaired as soon as possible, so as to avoid damage caused by the starter being energized for a long time and causing abnormal wear and tear of the engine large gear ring.

The solution to the abnormal noise of the starter motor is as follows:

1. If there is an abnormal sound when starting instantaneously, there will be no abnormal sound when the engine is started. It is likely that the carbon brush inside the starter motor is faulty. The principle of starting the motor is that the electromagnet works after the power is on, and the gear of the starting motor is combined with the flywheel of the engine, and rotates at the same time, so that the engine can be driven to start, and the gear will quickly return after the engine starts.

This fault is because the gear of the starting motor does not return quickly, resulting in an abnormal sound caused by the teeth of the flywheel, so it is necessary to check the starting motor;

2. To reduce the probability of this failure, when you can turn the ignition key to start the vehicle, do not turn to the key for more than 5 seconds, and quickly let go after turning the key, so that the ignition key will automatically return to its position;

3. If there is an abnormal sound at idle speed after the engine starts, this fault point is likely to be caused by the hydraulic support inside the engine cylinder head and the excessive clearance of the valve. Because the vehicle has more kilometers and the years of use will be longer, the engine valve and hydraulic support will have a certain amount of wear. After the gap between the reeds is too large, there will be a "da-da-da" abnormal sound.

To solve this fault, it is necessary to disassemble the cylinder head to replace these 2 components;

4. The way to slow down this failure is to change the engine oil regularly. Do not overuse the engine oil, as overuse will make the oil less lubricating and will accelerate the wear of the valve and hydraulic support.

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Hello, I am your exclusive technician, attentive, careful and attentive to answer your questions, I hope this service can help you. You're funny, and based on the problem you described, the situation you're talking about is a problem inside the motor. In this case, the motor can be repaired or replaced.

When replacing, you need to choose the original first-class accessories, so as to ensure the quality of the mountain judgment. It lasts longer and lasts longer, and is less prone to problems. Happy car.