What are the common problems of cars in summer?

In hot summer, people are afraid of being melted by the sun when they go out, and vehicles are easy to break down. Although the problem is small, the consequences are not small, and a little carelessness will bring security risks. YACCO oil helps you analyze the following common faults:

1.？ Engine failure

As the core component of automobile, the engine cooling system has small temperature difference and poor heat dissipation ability at high temperature, and the engine is prone to overheating. Excessive temperature will lead to abnormal combustion, high atmospheric temperature, high temperature of mixed gas entering the cylinder, high engine temperature, low heat dissipation efficiency of radiator and overheating of the engine. The mixed gas at the end of the combustion chamber is heated more, which intensifies the pre-combustion reaction and is easy to produce deflagration. Abnormal combustion can also cause thermal deformation and even cracking of cylinder block and cylinder head, and it is more common to burn cylinder gasket, valve and valve seat.

Prevention and treatment: In hot weather, make some necessary seasonal inspections and adjustments to vehicles. In particular, check and maintain the cooling system and remove the scale from the cooling system (radiator and water jacket). When the engine is overheated and the water tank is boiling, stop to cool down, and be careful not to turn off the engine to prevent the engine from overheating and causing cylinder pulling.

2.？ Problems of oil parts system

The higher the temperature, the higher the temperature in the range hood, and the easier it is to produce air resistance. Especially when the car is climbing a hill with full load or driving at a low speed for a long time, it is more likely to happen. There is also abnormal ignition. When the vehicle is driving in a high temperature environment, because the ignition coil is overheated, the high-voltage spark is weakened, which is easy to cause the engine to stall at high speed. In severe cases, it will burn out the ignition coil and affect the normal running of the vehicle.

Prevention and treatment: If the weather is overheated, replace the oil with high viscosity and shorten the oil change cycle appropriately. Check the density and liquid level of electrolyte frequently, replenish distilled water in time, and keep the vent open. Adjust the generator regulator properly to reduce the charging current of the generator. The measures to prevent air resistance in the fuel supply system are to improve the heat dissipation and ventilation of the engine and separate the heated parts of the fuel supply system on the basis of the original vehicle.

3.？ The battery is dead.

When the battery temperature is high, the electrode will be oxidized due to the aging of the insulating layer. Especially for the negative electrode, the electrode tip will produce white oxide, which will lead to unstable battery voltage. At this time, it is necessary to inspect and maintain the battery to protect it and prevent it from leaking prematurely.

Prevention and treatment: check whether the battery surface is clean before driving. The pole post is free from corrosion, and the positive lead wire should be well insulated, otherwise self-discharge will occur. In addition, it is best to keep the battery fully charged when stopping the engine.

4.？ The air conditioner does not cool.

In summer, if the engine is exposed to sunlight for a long time, the water temperature will be too high. At the same time, the cooling effect of radiator will be weakened, which will affect the air conditioning system of the car.

Prevention: Pay attention to regular inspection and cleaning in summer. When using the air conditioner for the first time, check the air conditioning system first, and check whether the refrigerant and air conditioning filter element are too dirty and whether there are foreign objects in the radiator through the water storage tank. When turning on the air conditioner, pay attention to choosing the appropriate air conditioner temperature, and close the window at the same time, which will waste oil while the cooling effect is not good.

5.？ Internal aging

The temperature inside the car exposed for a long time is much higher than that outside. The materials used in interior decoration are prone to aging after exposure, and high temperature will also cause the emission of toxic substances from plastics, which will affect health.

Prevention: try to park the vehicle in the shade. If you don't have this condition, you can cover it with a solar film, which can play a certain heat insulation effect. In addition, avoid placing some lighters and inflammable and explosive articles in the car, which may cause explosion at high temperature.

6.？ High temperature is easy to cause puncture.

The most common fault in hot weather is tire leakage. When the ground temperature is as high as 50℃-60℃, the tire will work under high load under such harsh conditions, which will easily aggravate the wear and tear, and the probability of tire puncture caused by tire pressure will also increase greatly.

Prevention: Park the vehicle in a cool place with high temperature as far as possible, pay attention to the tire pressure and tire wear before driving, and regularly check and clean the foreign bodies in the tread groove of the tire to ensure that the tire is in good working condition.