Spring and summer alternations, the temperature change difference is relatively large, for the car, to experience the temperature rise brought by oil, steam and other aspects of the change, in advance to do a good job of car inspection and maintenance, in order to better prevent vehicle conditions, so again busy to check.

Four must-have tests at the turn of spring and summer include:

A, do not remove cleaning valve carbon, cleaning nozzle and replace spark plug

The direct result of the formation of carbon on the back of the valve is poor engine acceleration, idling instability, sometimes accompanied by the intake manifold firing, cold car starting difficulties and a series of problems.

Cleaning carbon accumulation is usually done without removal. If carbon accumulation is serious, the cylinder head can be used to clean the valve. Through the analysis of the maintenance station, it is found that it is a gradual process from the formation to the accumulation of carbon to the influence of engine normal operation. When the engine appears cold car starting difficulty, idling instability, that the carbon accumulation has been quite serious, further will cause fire broken cylinder, until unable to start.

The maintenance cost of cleaning the valve with the cylinder head is higher. In order to avoid the loss of the cylinder head, it is recommended that the owner find that the car is difficult to start, immediately go to the maintenance station for inspection. After excluding other factors, the valve carbon should be cleaned in time.

Do not remove cleaning valve carbon, cleaning nozzle and replace spark plug, in the inspection of oil and cleaning filter, nozzle and spark plug most people will remember, but for carbon cleaning sometimes will be missed. In the current situation of such a high oil price, cleaning valve carbon deposition can greatly reduce fuel consumption, it is necessary.

2. Check the air conditioner and clean the air filter

Air conditioning is like the human body, do not maintain, do not exercise, some small problems do not go to the doctor, the body is naturally worse and worse. Air conditioning for a long time, naturally will be dirty, dirty cleaning and maintenance. Good maintenance, not only eliminate air conditioning pollution hazards, clean the air, but also make air conditioning performance as new, save energy and prolong the service life.

"Winter dirt, spring bacteria breeding", in fact, air conditioning is very vulnerable to pollution. Cleaning the room, changing clothes, people moving around, pollen, suspended matter from smoking, talking, coughing, sneezing, etc., may cause biological pollution in the home air conditioning. Due to not often cleaning, air conditioning filter net deposited a lot of dust, breeding bacteria lodged in the inlet and outlet, filter, air conditioning pipe, evaporator, condenser and other places. If it is not removed in time, after the air conditioner is opened, these germs will float into the room with the cold air sent by the air conditioner and cause illness.

Check the air conditioning, cleaning the air filter, with a winter of air conditioning, there will be a large number of dust and bacteria deposited in the filter or evaporation box, if not cleaned, not only in the summer use will affect the coolness of the cold wind, reduce the air volume, at the same time harmful dust and bacteria will harm health.

Three, check the brake oil and brake pads

In order to ensure driving safety, we must maintain the brake system, and the maintenance of the brake system in the final analysis is the two aspects of brake pads and brake oil, because they account for the majority of the braking power of the car. So, how do we deal with the two key factors that determine the effectiveness of brakes - brake pads and brake oil?

1, brake pad inspection

Brake pads (disc) or brake shoes (drum) are the ultimate brake in any brake system, so check the thickness of the pads or brake shoes regularly. When it is found to be close to or less than the minimum thickness specified by the manufacturer, it should be replaced immediately. Check the brake pad at the same time, but also check the wear of the brake disc or brake drum, such as the indentation of the contact surface, to timely CD or light drum, to ensure the contact area with the brake pad, improve the braking force.

2. Check brake oil

Before checking the brakes, carefully wipe the dirt off the master cylinder to prevent any dirt from falling into the tank. Remove fasteners (usually dowel) and covers. For cylinders without a scale, the level should be kept 6 mm from the top of the cylinder. If there is a scale, just keep the level higher than the scale.

Check the brake oil and brake pad, brake system is extremely important for the safety of the car, often check the oil level of the brake oil pot, the oil level is lower than the limit, to be timely added to the upper limit. In addition, because the brake oil itself has strong hygroabsorbency, after a period of use, the brake oil will reduce the boiling point of the brake oil because it absorbs too much water in the surrounding air, and the brake oil will cause brake lock or failure when boiling, therefore, the brake oil must be replaced regularly. Brake oils of different brands may react or corrode the brake system when mixed. Therefore, the same brand of brake oil must be replaced. Brake pads are easy to wear parts in the brake system, the need to check the degree of wear often, if the degree of wear exceeds the limit required by the manufacturer, must be replaced.

Four, wheel dynamic balance and tire pressure

Wheel dynamic balance and tire pressure, normal every ten thousand kilometers to the car balance detection, so the detection is essential when twenty thousand kilometers, especially the mountain road, curves, snow and ice and other road conditions are more complex, must not ignore this. Remind the owners, it is coming to summer, the hot and rainy weather will soon be more, to do maintenance of the car must look at the tire pattern and tire pressure, it is best to fill a little nitrogen, so that the temperature will not change when the tire pressure is also a big change.

How does the owner inflate the car tire on a daily basis?

1, driving for a period of time after the car stopped to wait for the tire heat after gas. This is because the tire temperature rises when the vehicle is running, which has an effect on the air pressure.

Car owners (15) spring and summer alternate vehicle maintenance of the four major projects

2. Check the valve nozzle. If the valve nozzle and valve core are not matched smoothly, there are convex concave phenomenon and other defects, it is not easy to inflate and measure the air pressure.

3. Pay attention to cleaning when inflating. The air filled should not contain moisture and oil to prevent deterioration of the inner tube rubber.

4, inflation should not exceed the standard too much, also can not be inflated for a long time on business trips and too much inflation. Because overstandard too much will promote the cord overstretch, cause its strength to reduce, affect the life of the tire.

5, inflation operation should be carefully. The dust on the valve mouth should be wiped before inflation, do not loosen the valve core. After aeration, apply soap foam to the valve mouth to check whether there is air leakage. If there is air leakage, there will be continuous small bubbles. The valve cap is then tightened to prevent sediment from entering the valve nozzle.

How to use tires to save fuel?

1, select the size, specifications of the vehicle design of the tire. Try not to refit, if conditions can choose some fuel-saving tires.

2. Check the tire pressure regularly and recommend that the owner check it at least once a month.

3, let your car always keep the wheel positioning correct and dynamic balance accurate, can ensure low fuel consumption rate.

4. Qualified owners can fill their tires with nitrogen (including the spare tire).