4 major item inspection items for large temperature difference vehicle maintenance

In spring and summer, the temperature changes are quite different. For automobiles, we must experience changes in the aspects of oil and gas brought about by the temperature rise, and do a good job of checking and maintaining the vehicles in advance in order to better prevent vehicle outages. You must check if you are busy again.

The four mandatory testing items at the turn of spring and summer include:

First, free cleaning valve carbon deposition, cleaning nozzle and replace the spark plug

The direct consequence of the formation of carbon deposits on the back of the valve is that the engine accelerates poorly, the idling speed is unstable, and sometimes it is accompanied by a series of problems such as the intake manifold blasting and the cold vehicle start-up difficulty.

Cleaning coke usually adopts the method of disassembly-free cleaning. If the carbon deposition is serious, you can use the method of cleaning the valve with the dismantling cover. The maintenance station found through analysis that it was a gradual process from the formation of coke to agglomeration to affect the normal operation of the engine. When the engine started to suffer from difficulties in starting the engine and the idling speed was unstable, the carbon deposition was already serious, and the fire could be further broken. Until it can't start.

The method of disassembling the cover cleaning valve is relatively expensive. To avoid the loss caused by dismantling the cylinder cover, it is recommended that the owner of the vehicle discover that the driver is difficult to start, and immediately go to the maintenance station to inspect it. After eliminating other factors, the valve coke should be cleaned promptly.

Do not disassemble and clean the valve carbon deposit, clean the nozzle and replace the spark plug. When checking the oil and cleaning the three filters, most of the nozzle and spark plug will remember, but the cleaning of the carbon deposit will sometimes be missed. Under such a high oil price, cleaning valve coke can greatly reduce fuel consumption, which is necessary.

Second, check the air conditioning, cleaning the air filter

Air conditioning is like a person's body, no maintenance, no exercise, some minor problems do not see a doctor, the body is naturally getting worse. Air conditioning for a long time, it will be dirty, dirty, you have to clean and maintain. Being well-maintained not only eliminates the hidden dangers of air-conditioning pollution, cleans the air, but also allows the air-conditioning performance to be renewed, save energy, and extend the service life.

“In winter, filth is filth and bacteria grow in spring.” In fact, air conditioning is very vulnerable to pollution. Cleaning the room, changing clothes, walking around, pollen, aerosols from smoking, talking, coughing, sneezing, etc., may cause biological pollution in the home air conditioner. Due to infrequent cleaning, a large amount of dust is deposited on the air-conditioner filter screen, and bacteria that grow in the air enter the air outlet, the filter, the air-conditioning duct, the evaporator, and the condenser. If it is not cleared in time, air-conditioners will turn on, and these germs will become sick as the cold air sent from the air-conditioner flows into the room.

Check the air conditioning, clean the air filter, use a winter air conditioner, there will be a lot of dust and bacteria deposited on the filter or evaporation box, if not cleaned, not only will affect the coolness of the cold air when used in summer, Reduce the amount of wind, while harmful dust and bacteria can harm health.

Third, check the brake oil and brake pads

In order to ensure the safety of driving, we must maintain the brake system, and the maintenance of the brake system is in the final analysis two aspects of the brake pads and brake fluid, because the brakes of the car accounted for most of them. So, how do we deal with the two key factors that determine the braking effect - brake pads and brake fluid?

1, brake check

Regardless of the brake system, brakes (disk type) or brake shoes (drum type) are used to complete the braking action. Therefore, check the thickness of the brake pads or brake shoes regularly. When it is found that its thickness is close to or less than the minimum thickness specified by the manufacturer, it should be replaced immediately. When inspecting the brake pads, check the wear of the brake discs or brake drums. If dents occur on the contact surfaces, use a CD or drum to ensure the contact area with the brake pads and increase the braking force.

2, brake oil inspection

Before checking the brakes, carefully clean the dirt on the main tank to prevent any dirt from falling into the tank. Remove the fasteners (usually the pins) and the lid. For uncalibrated cylinders, keep the liquid level 6 mm from the top of the cylinder. If there is a scale, just keep the liquid level higher than the scale.

Check the brake oil and brake pads. The brake system is extremely important for the safety of the vehicle. Always check the oil level of the brake oil pot. When the oil level is below the lower limit, it must be added to the upper limit in time. In addition, because the brake oil itself has strong hygroscopicity, after use for a period of time, the brake oil will absorb the excess water in the surrounding air and cause the boiling point of the brake oil to decrease. The brake oil will cause the brake to lock or malfunction when boiling. Such as failure, therefore, brake oil must be replaced regularly. After mixing different brands of brake oil, it may react or corrode the brake system, and the same brand of brake fluid must be replaced when replacing. Brake linings are the parts that are easily worn out in the brake system. They need to be checked frequently for wear. If the wear level exceeds the limit required by the manufacturer, they must be replaced.

Fourth, wheel dynamic balance and tire pressure

Wheel balance and tire pressure, the normal every 10,000 kilometers will have to carry out the balance of the vehicle detection, so 20,000 kilometers this test is more essential, especially the mountain road, detours, ice and other road conditions are more complex Must not ignore this one. Remind owners, it is necessary to summer, and the high temperature and rainy weather will increase immediately. To maintain the car, we must take a look at the tread pattern and tire pressure. It is best to charge a little nitrogen, so that it will not change greatly in temperature. At the same time, the tire pressure also produced a large change.

How does a vehicle owner inflate a car's tires everyday?

1. After the car has driven for a period of time, wait until the tire cools before refueling. This is because the temperature of the tire will rise when the vehicle is driving and it will have an effect on the pressure.

2, to check the valve. If the valve stem and the valve core do not match with each other, there are protruding concave phenomenon and other defects, which are not easy to inflate and measure air pressure.

3, inflate should pay attention to clean. The filled air must not contain moisture and oil to prevent deterioration of the inner tube rubber.

4. The inflation should not exceed the standard too much, nor can it be inflated too much due to long-term travel on the outside. Excessively high standards will cause the cord to stretch too much, causing its strength to decrease, affecting the life of the tire.

5, inflate the operation carefully. The dust on the valve mouth should be wiped before filling. Do not loosen the valve core. After inflating, apply soap foam to the valve to check for leaks. If there is a leak, continuous small bubbles will occur. Then tighten the valve cap to prevent sediment from entering the interior of the valve.

How to use tires to save fuel?

1, choose the size, specifications meet the vehicle design tires. Do not modify as much as possible, if you have conditions, you can choose some fuel-saving tires.

2, regularly check the tire pressure, it is recommended that the owner of the vehicle to check at least once a month.

3, let your car always maintain the correct wheel alignment and dynamic balance, can guarantee a lower fuel consumption rate.

4. Conditional owners may fill the tires of the car with nitrogen (including spare tires).

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