How many kilometers is the running-in period of the new car？
The running-in period of a new car refers to the period when a new car runs for a certain distance for the first time after leaving the factory to make the engine parts run smoothly. Generally speaking, the running-in period of a new car is 1000-3000 kilometers. Generally speaking, the running-in period of a new car has the following characteristics:
1. There are many driving failures: due to improper assembly of various components and other factors, there are many driving failures of new cars during the running-in period;
2. High fuel consumption: In order to ensure that the new car runs in a light load state during the running-in period, the carburetor car is equipped with a speed limiter, so it is easy to cause the mixture to be too rich, thus increasing the fuel consumption;
3. Lubricating oil is easy to deteriorate: during the running-in period of a new car, due to the rough surface of the parts and the small gap between the two parts, the temperature of the lubricating oil will rise, and at the same time, many metal chips will be worn off and fall into the lubricating oil, which is easy to oxidize and deteriorate the lubricating oil.
Matters needing attention when using a new car during the running-in period:
1. Warm up before starting: This is for EFI vehicles. Before starting, turn the key to the second gear and wait for 5-10 seconds before starting. This is because the gasoline pump starts to work after the key door is opened, so that the oil pressure and fuel injection amount can be adjusted. Therefore, it should be started after a few seconds to protect the new car engine;
2. Avoid emergency braking: Emergency braking will not only impact the braking system in running-in, but also increase the impact load of the chassis and engine. It is best not to brake urgently within 300 kilometers of the first driving;
3. Avoid overloading: If a new car runs at full load during the running-in period, it will cause damage to the parts. Therefore, domestic cars cannot exceed 75%-80% of the rated load within the first 1000 kilometers.
Imported cars should not exceed 90% of the rated load. In addition, in order to reduce the load on the car body and power system, a relatively flat road surface should be selected to avoid vibration, collision or emergency braking.
4. Avoid running long distances: when a new car runs long distances during the running-in period, the continuous working time of the engine will increase, which is easy to cause parts wear;
5. Don’t drive at high speed: there is a speed limit during the running-in period of new cars. Generally, domestic cars are within 40-70km/h and imported cars are within 1,000km/h. When the throttle is fully open, the speed cannot exceed 80% of the top speed. Pay attention to the engine tachometer and speedometer during driving to ensure that the engine speed and speed work at a medium speed. Generally, the engine speed during the running-in period should be between 2,000-.
6. Use high-quality gasoline: The gasoline used by the new car during the running-in period should not be lower than the label specified by the manufacturer, and high-quality gasoline should be added as much as possible, and wear-resistant oil essence should not be added, so as to avoid insufficient mileage and insufficient running-in;
7. Avoid removing the speed limiter in advance: the speed limiter is a throttle device installed between the carburetor and the intake pipe. The owner can’t remove it in advance, and should wait for the new car to travel for 1000 kilometers before removing it under the condition of good maintenance;
8. Shift gears in time: Shift gears in time is to avoid driving at high speed and low speed. Don’t use one gear for a long time, and don’t drive the car to the limit in each gear. Generally speaking, the speed of each gear is controlled within 3/4 of the top speed, specifically: 25km in the first gear, 40km in the second gear, 60km in the third gear, 90km in the fourth gear and 100km in the fifth gear;
9. Correct adjustment of ignition system and oil supply system: This can solve the change of vacuum economizer caused by installing speed limiter and improve the economy of running-in period.
In addition, in order to keep the mechanical system of the new car in the best condition and prolong its service life, it is recommended that the new owner maintain your car in stages during the running-in period:
1. Within 100 kilometers: the braking effect of friction brake pads has not reached 100%, and the tire friction force is not enough. Therefore, when braking, you should use more force than normal. In addition, in terms of inspection and maintenance, you should tighten exposed bolts and nuts, add fuel and engine oil, replenish coolant, check the air pressure of transmission, front and rear drive axles, transmission shafts, wheels and tires, and check the braking capacity of lighting instruments, batteries and braking systems.
2. 100-500 km: The tire adhesion has not reached the best effect, so the owner should try to avoid emergency braking when cornering quickly. In addition, in terms of inspection and maintenance, the engine oil should be replaced at this time, the oil pan should be cleaned with kerosene, the oil filter element should be replaced, and the front and rear hub nuts should be tightened;
3. 500-2,500 km: The owner should drive gently, with the speed not exceeding 100 km/h and the rotation speed not exceeding 2,500 rpm;
4. 2,500-3,500 km: When the water temperature reaches the working temperature (the water temperature pointer is in the middle of the scale), the owner can increase the vehicle speed to the maximum speed or the maximum engine speed. In addition, if your car is made in China, it is necessary to change the gear oil in the transmission, main reducer and steering gear, and check and adjust the clutch pedal.
Driving correctly during the running-in period of new cars, in addition, car owners should also strengthen the maintenance of new cars during the running-in period. Everyone should start from the following aspects:
1. First maintenance of a new car: The first maintenance is the most important. You should carry out beauty maintenance such as waxing your car body in a professional car beauty maintenance institution, which is the key to car maintenance in the future. Otherwise, if it is not properly maintained, your car will have problems;
2. First maintenance of paint surface: Although the paint surface of a new car has no aging problem, the paint surface of the car is exposed to air, acid rain, sandstorm, etc. from the factory to the owner’s purchase. Therefore, it is very important to maintain your car in time and correctly. When maintaining, if you buy an imported car, you should first pay attention to the fact that the car wax contains paraffin, resin, Teflon and other materials. When removing wax, you should not use gasoline or kerosene to wipe it. You should choose a professional wax remover.
3. Cleaning the car body for the first time: Wash the car body carefully for the first time, otherwise, it will damage the bright oil on the outer layer of the car body and make the car darker and darker. You’d better go to a professional dust-free car wash room and choose a neutral detergent to clean the sand and other dirt on the car body surface. In addition, the dirt that is invisible to the naked eye, such as flying paint, gum, acid, alkali and other chemical components, can’t be removed only with the detergent, and it can be carefully wiped with special decontamination clay.
4. Glaze sealing treatment: This is a new technology. The glazed car does not need to be waxed within one year. It can be dried with clean suede cloth after being cleaned with clear water. After glaze sealing, the car body is protected from oxidation and ultraviolet rays, and the paint does not fade.
Finally, it should be noted that when the vehicle travels to 3000 kilometers, the owner should do a routine maintenance for your car, including changing the oil, changing the filter, measuring the cylinder pressure, removing the carbon deposit in the fuel chamber, removing the speed limiter, adjusting the engine idle speed, checking the brake system, adjusting the clutch pedal, fastening the front suspension, etc., so as to make all parts of the vehicle cooperate smoothly and give full play to its best performance.
1, 1-500 km is the initial running-in. At this time, the speed should not be too fast, generally below 70-80 km, and the speed should not exceed 2200.
2, 500-1000 km is the medium-term running-in, and the maximum speed can be appropriately increased, generally reaching 90-100 km, and the rotation speed is still below 2500 rpm. Properly increasing the speed will not only affect the engine, but also promote the running-in, and we can see if there is any abnormality when increasing the speed again.
3, 1000-1500 km is the late running-in, and the speed can be raised below 120 km. Because running-in is a gradual process, it must be gradually overweight. The rotation speed should not exceed 3000 rpm.
4. When all cars are driving at a low speed, the actual burden is greater than that of driving at a medium speed, so the running-in period should not be below 60 km/h for a long time. The speed must be gradually increased. At the same time, if you have been running at 80 kilometers per hour after the running-in period, you will suddenly increase the speed, which will make the new car unsuitable, so you should gradually increase the top speed of the running-in period.
5. Don’t drive at a fixed speed for a long time during the running-in period, but have a speed change.
6. Avoid sudden braking and sudden speed increase when driving during the running-in period.
Automatic gear car, because it can’t be determined by manual gear shifting, can only be achieved by driving speed. In short, the running-in should be driven at a constant speed, and the levels of 30 km/h, 60 km/h, 80 km/h and 100 km/h must be stable. It is suggested to get it done on a flat highway around 10 pm.