The new car runs between four and five hundred thousand, and it feels like the body is little by lit

Replace all four shocks.

The new car runs between four or five hundred thousand, and the phenomenon of feeling the body little by little, it is recommended to check the tire pressure of the car first, and it is recommended to do some tire dynamic balance if there is no problem with the tire pressure.

These things are stipulated to be the scope of major maintenance, and they did it right, but they didn't give you the key things that led to this problem, hehe, to clean the inlet and oil circuit will have a good effect (if possible, you can remove the inlet for cleaning, and if you don't have the conditions, you can make a hanging bottle.) The hanging bottle is a little worse than the effect of removal, and there is a certain corrosiveness, especially for old cars) If you have the conditions, you can consider cleaning the piston valve, if these two projects are done, the problem basically does not exist. All that's left to do is pull the highway.

Pull a few times and you'll notice that your car gets younger. Hehe, there is also a cleaning of the throttle, which you didn't mention above.

Dear, you can also tell me about your car model, every car problem is different, you look at the idle speed of your car, how much is the speed.

There are several reasons for this problem, 1. Lack of cylinder. 2. The spark plug does not ignite. 3. The wire of the spark plug is not plugged in tightly. 4. The fuel injector is blocked. Or maybe the ignition is broken.

Consider whether it is a lack of cylinders! Either it's a problem with the fuel injector, make a match!

Is this sound coming from inside the car or from outside the car?

If it is issued from inside the car, it is necessary to check whether the airbag hairspring under the lower steering wheel and the cross universal joint inside the direction column are normal. If these two parts are worn or malfunctioning, the fault phenomenon you mentioned will occur.

If there is an abnormal noise on the outside of the vehicle, it is necessary to check whether the plane bearings above the lower two front shocks are worn. Whether the ball head of the steering machine is loose. The rack and pinion inside the steering machine are worn. The failure of these 3 components will cause the vehicle to malfunction as you describe.

Reasons why there is a squeak under the car when it is moving:

Due to the abnormal contact and friction between the brake disc and the brake pad, according to the analysis of previous maintenance cases, most of the cases are caused by the following reasons, one may be due to the phenomenon of poor return of the brake cylinder, resulting in the brake disc and the brake pad are always in slight friction, and the other may be caused by the hard spots on the surface of the brake pad or the foreign matter such as fine sand particles between the brake disc and the brake pad.

Maintenance suggestions: It is recommended to go to a special repair shop to check whether the brake cylinder has a poor return, or to remove the brake pads and polish the friction surface, which will generally be significantly improved.

1. The abnormal noise of the door, if it is one of the doors, because the structure of the door is relatively simple, then you have to see if it is because the screws are not tightened.

2. If your car is with a sunroof, then you have to see if the sunroof has any abnormal noise, the abnormal sound of the sunroof is generally normal, because after driving for many years, the guide rail inside the sunroof will fall with small stones or dust or something, and if the sealing is not strict for a long time, it will produce abnormal noise.

This kind of problem is actually not a big problem, generally you have a luxury car like BMW Mercedes-Benz, he will also have a sunroof abnormal noise.

3. The abnormal sound of the center console, the abnormal sound of the center console is generally related to the overall workmanship and materials of the car. You have to consider whether your car has dismantled the center console before, whether it has installed the navigation cable or something, whether it is still intact when it is installed, or what parts are not assembled?

4. Abnormal noise is on the chassis, or outside the car. In this case, it is generally recommended that you go to the 4S store to find out.

There should be a self-made sound while driving, indicating that his screws are loose, causing problems with his connection.

It must be loose, go to the 4S store to check.

Need to do wheel alignment, right?

Four-wheel alignment is generally the vehicle has a deviation, the steering wheel is not correct and the tires have abnormal wear, and the fault phenomenon of eating tires and gnawing tires is caused by the incorrect data of the vehicle's four-wheel alignment. You need to do four-wheel alignment.

However, some vehicles have traveled for a long time or after a long period of use, the data of the four-wheel alignment will have certain changes, although there is no fault phenomenon mentioned above, but in order to prevent the abnormal wear and tear of the new tires and the failure phenomenon of gnawing the tires, it is recommended that it is better to do a four-wheel alignment.

Wheel alignment is generally the vehicle has a deviation, the steering wheel is not correct and the tires have abnormal wear, the fault phenomenon of eating tires and gnawing tires is caused by the data of the vehicle's four-wheel alignment. You need to do four-wheel alignment.

However, some vehicles have traveled for a long time or after a long period of use, the data of the four-wheel alignment will have certain changes, although there is no fault phenomenon mentioned above, but in order to prevent the abnormal wear and tear of the new tires and the failure phenomenon of gnawing the tires, it is recommended that it is better to do a four-wheel alignment.

1. Engine oil, cooling water, tire gas, etc., must be sufficient, no leakage occurs, and should be replenished in time when a deficit is found.

2. If there is an abnormal sound in each part, it should be repaired in time, and the impact of mechanical failure on the vehicle during the run-in period is often much greater than that of the vehicle during the run-in period.

3. Generally, there are warning lights in the dashboard of the car, and some cars are even equipped with computers. Only by discovering the alarm information in the dashboard and computer in time can we better control the condition of the vehicle.

4. The loading quality of the vehicle in the run-in period must not exceed 70% of the rated load capacity, and the full load and overload will cause great damage to each component of the new car.

What should I pay attention to during the run-in period when I just bought a new car? Newbies get to know it.

What are the precautions for a new car?

Cars have become an indispensable means of transportation for people to travel, in today's car-making technology has been very exquisite, do you need to be careful to run in after buying a new car?

1.Be sure to warm up before starting.

The so-called preheating is to give the engine a charge lubrication time, especially for turbocharged 4102 models, and the preheating time of 1653 is recommended to be at least one minute or more.

2.Start smoothly and accelerate slowly.

After the engine is ignited, the car should be warmed up first, and if the car is easily accelerated or braked sharply, it is easy to mode the car-related parts.

3.The engine speed should not be too high.

4.Don't hold one gear for long periods of time.

When driving, it is necessary to shift gears flexibly, so that each gear can be run-in, and the best way to increase the coordination of parts of the gearbox is to run in different road conditions.

5.Do not drive with heavy loads.

The load of the new car on the engine will increase, the greater the load, the damage will be serious, the lighter the car during the run-in period, the better, the first 100 kilometers are best to drive without load.

6.Do not brake unless necessary.

Emergency braking will produce shock loads on the chassis and engine of the car, so try not to slam on the brakes.

7.Do not drive for long periods of time at the beginning.

At the beginning of running-in, don't let the new car drive for too long or run long distances, start-stop is the best way to run-in.

8.Don't change the oil early.

Generally speaking, the original engine oil of a new car is a special oil for car running-in. Special oil has the advantages of low viscosity, strong heat dissipation, strong oxidation resistance, cleaning effect, etc., and some models also deliberately add abrasives to assist in running-in.

Generally no more than 80

The run-in period of the new car is generally about 2000 kilometers, and the run-in period is to exercise the performance of the car engine, so during this period we must do a good job of running in all aspects of the car, do not exercise high speed during the maintenance period, control it below the maximum of 80 yards, operate it steady, and step on the clutch to the end when the gear is suspended, and you can exercise high speed after running to 2000 kilometers, and you will also feel that the strength of the car is slightly greater.

In fact, the run-in is not only applicable to the engine, the gearbox is also to be run-in, which is the reason for the shift in the first 100 kilometers, the manual transmission model will be relatively stable, the clutch is stepped on the end of the shift, and then gradually lifted to complete a shift, but to prevent the clutch from stepping half to the gear, at this time not only the gear is very difficult to hang, and there is a very serious injury to the gearbox.

When a new car is in hand, there is a problem that many car owners are very concerned about, that is, the run-in period. I always hear a lot of old drivers say that the run-in period is very important for the vehicle, and the run-in can be used more smoothly in the later stage of the vehicle, and the power can be played better, and the run-in is not good, the car is always uncomfortable to drive, and the run-in period has such and such precautions, so that novice drivers do not know how to drive.

There is also a saying that the current car has been run-in before leaving the factory, and there is no need to run in, and there is no need to open anything. The current new car has indeed been pre-run before leaving the factory, and the manufacturing process itself is constantly improving, which is much finer than the previous vehicle.

However, no matter how perfect the manufacturing process is, and then run in in the early stage, it is impossible to polish the various parts to be very smooth, and there will always be some frizzy places, and these subtle unevenness still needs to be smoothed during the use of the vehicle. In addition, the vehicle engine is composed of many parts, and these parts also need to be slowly run in in the work to achieve the degree of mutual fit. Therefore, the current new car still needs to have a run-in period.

Of course, the current run-in period is really not as much as before, as long as you don't brake too often, press the accelerator or intentionally increase the speed when driving normally. Usually driving, the normal speed will not be too fast, basically will not exceed 100 kilometers, if there is really a need to run high speed, maintain 120 yards of uniform speed driving for new cars is no problem, do not have to be too entangled in speed, but also not faster, one is that the engine run-in has not been completed is really not good, the other is that speeding is both a violation and unsafe, even if it is not in the run-in period, do not do it.

Nowadays, the car has high processing precision of parts and components, and the running-in is relatively simple, generally as long as it is driven in strict accordance with the run-in period specified in the instruction manual, the car can go through the running-in period well and gradually reach the best use state.

Regarding the use regulations during the run-in period, the vast majority of model regulations are similar. In the first two hours of the car's operation, after the engine starts cold, the car should be heated in situ and wait for the engine temperature to rise before starting, it is best to let the car drive without load, do not pull people, the throttle should be as light as possible, do not climb a relatively large slope, do not go on the road, etc.; For the next 1,000 kilometers, it is best to warm up the engine in situ for a while after a cold startDo not press the accelerator pedal to the end during driving, and the engine speed should not exceed 3 4 of the rated speed, but it should not be too low, avoid dragging gears, and do not overload, especially heavy load climbingWait a minute; After more than 1,000 km, the engine speed and vehicle speed can be gradually increased to the maximum allowable speed, so that the various parts of the engine can achieve the best possible fit. After driving 3,000 kilometers in this way, we do the first insurance, change the oil, the car is completely run in, the fuel consumption and the use state are gradually getting better, and we can use the car freely.

Here we must pay attention to the fact that the tires and brakes of the car also need to be run-in. This is because the new tire has a protective layer on the surface when it leaves the factory, which has the effect of preventing the tire from aging during storage, but the friction coefficient between this protective layer and the ground is small and the adhesion is not good, so it will cause a decline in the car's handling performanceWhen after driving hundreds of kilometers, this protective layer wears off, the tire is completely in contact with the ground, and the adhesion is restored (this also applies to the newly replaced tires), so the tires have to be run in for more than 300 kilometers; In the car's braking system, the new brake pads and brake discs have a certain tolerance due to their shape and position, so the specified contact area between the two is not reachedGenerally more than 75%)), the brakes at this stage are not the best, only after running for a period of time, the brake pads and the brake disc will be completely fitted, and the brake system will play the maximum effect, so the brake system should be run in for more than 500 kilometers.

Another very important point is the running-in of people and vehicles. Many people have never touched a car after leaving driving school, the first time to buy a car, a new car, novices, are not familiar with the last parts of the car, what is the function of each system, what is the role of each button on the car, what is the handling of the car, the limit is **, these do not understand, it is very dangerous to drive on the road in this way. Therefore, after buying a car, you must first be familiar with the functions of various buttons, be familiar with the characteristics of the car, communicate smoothly between people and vehicles, and be proficient in finding various function buttons even in driving, which I think is much more important than the run-in of the car itself.

The reasons why the engine is significantly louder after the first warranty of a new car are as follows:

When the manufacturer chooses the initial oil, its requirements are very strict, and the formula is naturally slightly different from the various brands of engine oil we see on the market, and there are often some anti-wear agents in its ingredients, or so-called running-in agents and so on.

The oil you use after maintenance from the 4S shop is not the same, so it will cause the engine to be louder.

If you want to achieve the effect of putting the first barrel of oil into the car with the manufacturer, it is basically impossible, and you can only choose the oil suitable for your own model in the later stage.