Land Rover found out what was the reason for the rattling of the three accelerations

Hello, this needs to listen specifically to the abnormal noise coming from the **, it is recommended that you find a master to listen to it, thank you!

1. The engine has abnormal noise.

Symptom description: There is a lot of abnormal noise in the engine compartment, and most people also judge it to be the abnormal noise of the engine compartment by the sound**, which is usually a metal screeching sound or a howling sound.

Solution: The abnormal engine noise indicates that the technical status of a certain mechanism of the engine has changed. It is mainly caused by excessive wear and tear of some parts or improper assembly and adjustment.

Some abnormal noises can still predict that the engine will be damaged accidentally, so when the engine has abnormal noise, it should be repaired in time to prevent the fault from expanding.

It should be reminded that if it is an abnormal noise in the engine, most of the owners will not be able to solve it by themselves, and it is best to send it to the factory for maintenance.

2. There is abnormal noise in the gearbox.

Symptom description: If there is a "rustle" sound inside the gearbox while the car is driving, and there is no more after pressing the clutch or accelerator, there will be a whistle-like sound when changing gears.

Solution: There are many transmission parts, and the reasons for the sound are more complex, so we should pay attention to whether it is related to a specific speed, such as some planetary teeth that sound at about 50km h.

Whether it is related to certain gears, which is very important for judging the failure of the transmission, if a certain gear sounds, it must be related to the components that affect the transmission of the gear; If all gears sound, it is often a common meshing shaft failure or a lack of oil in the transmission. Whether it is related to specific actions, such as increasing and decreasing gears, starting, rapid acceleration, sharp deceleration, turning, etc., are effective means to judge abnormal noise, among them, changing speed and direction are particularly important for judging the rear axle fault.

If the abnormal noise of the transmission is obvious, it is recommended to send it to a professional repair shop to check the faulty parts, and then replace them.

Summary. Dear, hello, the reasons for the abnormal noise of the Land Rover engine are as follows: 1. The car is not at low speed, and under normal water temperature, if there is a humming sound, it is the sound of the electronic fan used for water tank heat dissipation, and the cooling fan equipped with the car is driven by a separate motor, which may be a temperature sensor, or the temperature regulator is faulty; 2. In the case of low speed or variable speed of the car, the gap between the piston and the cylinder wall is too large, the piston pin is too tightly assembled or the connecting rod bearing is too tight, the gap between the tappet and its guide hole is too large, and the contour of the valve cam is worn, and the sound of discord is manifested at different speeds; 3. The engine "knocks on the cylinder", of course, this is a relatively regular pronunciation, and there will be a similar "buzzing" body sound in the initial performance, and the reason for this phenomenon is generally the adjustment of the valve timing; 4. Secondly, it is caused by more carbon deposits in the cylinder, and the carbon deposits are glued to the cylinder wall, especially in the case of cold cars, there will be a top valve.

Dear, hello, there are several reasons for the abnormal noise of the Land Rover hair mill: 1. The car is not at low speed, and in the case of the water temperature is blind, if there is a buzzing sound, it is the sound of the electronic fan used for the cooling of the water tank, and the cooling fan equipped with the car is driven by a separate motor, which may be the temperature sensor, or the temperature regulator is faulty; 2. In the case of low speed or variable speed of the car, it generally belongs to the piston and the cylinder wall gap is too large, the piston piston pin assembly is too tight or the connecting rod bearing is too tight, the gap between the tappet and its guide hole is too large, and the air distribution cam profile is worn, and the sound is discordant at different speeds; 3. The engine "knocks on the cylinder", of course, this is a relatively regular pronunciation, and there will be a similar "buzzing" body sound in the initial performance, and the reason for this phenomenon is generally the adjustment of the valve timing; 4. Secondly, it is caused by more carbon deposits in the cylinder, and the carbon deposits are glued to the cylinder wall, especially in the case of cold cars, there will be a top valve.

It may also be that the connecting rod bearing is loose and causes the bearing to be burned or rotated due to the size inconsistency, the crankshaft bearing is loose or the bearing is burned, and the piston first pin is broken, so it is recommended to go to the repair shop for maintenance.

Some abnormal noises are OK, and the engine is likely to be damaged by accidents, so when the engine makes abnormal noise, it should be repaired in time to prevent the expansion of the fault.

It should be reminded that if it is an abnormal engine noise, the owner is likely to be unable to solve it by himself, and it is best to send it to a professional repair shop for maintenance.

Summary. After the car is parked for a long time, the cold car starts, the engine will produce a strong vibration, the vibration and noise at this time are normal, the various parts of the engine that have been silent for a long time need to be lubricated and cooperated, and the engine will return to normal after starting for a while.

After the car is parked for a long time, the cold car starts, the engine will produce a strong vibration, the vibration and noise at this time are normal, the various parts of the engine need to be lubricated and cooperated, and the engine will return to normal after a while.

As long as the water temperature is normal, it's fine. No problem, it was cool in the morning or for a long time to park the car, and the engine water temperature did not reach the normal temperature. The engine computer adjusts the supply of mixed gas thickness, coupled with the small amount of oil supply, can not meet the lubrication requirements, so the speed is high and loud or the work is unstable and the exhaust smell is large, as the engine gradually heats up, it slowly returns to the normal state of idleness, wide and bright speed, and the working state.

The reason why the car is in a cold state, the starting idle speed is high and loud: 1. When the engine starts cold, the sliding cavity has not been transmitted to various parts due to the relatively low temperature, and the oil in the engine has been refluxed to the oil pan because of the long parking time, and the cold car starts to warm up the car for about 1 to three minutes to make the engine fully lubricated. 2. At the same time, in order to make the engine reach the normal working temperature quickly, the speed during cold start will also be high, so the engine noise will be louder when the cold car is started.

It may also be accompanied by some jitter.