What are the items of annual inspection of automobiles?

1, oil and oil filter: check the maintenance of lubrication system to prevent excessive wear of parts due to deterioration, shortage and impurities of oil, and replace the oil filter with the oil change.

2. Fuel filter: maintain the oil supply system to prevent excessive impurities from blocking the fuel pipeline, resulting in insufficient engine power or flameout.

3. Air filter: maintain the air intake system to prevent air dust and impurities from entering the cylinder, causing wear and tear of parts of the compression system. You can clean the air filter at any time.

4. Air conditioning filter element: Check the air conditioning filter element to prevent the filtered dust from entering the evaporator, resulting in insufficient refrigeration or air conditioning system failure. If the dust on the filter element is not cleaned for a long time, it will stink and pollute the air inside the car. ?

5. Spark plug: maintain the ignition system of the car to prevent the spark plug from being too carbon-deposited, which will lead to the failure of the spark plug, electrode leakage, no ignition and the car will not start.

6. Transmission: Check the gear oil of the transmission to prevent the gear from being seriously worn or broken, which will lead to abnormal sound, gear jumping and seizure of the transmission.

7. Throttle: Because the air filter is not clean, the throttle is easy to get dirty. If the throttle plate is dirty, it will affect the idling instability, so it needs to be cleaned.

In addition, there are brake fluid, batteries, fuel injectors, brake pads, and other components for maintenance, so as to keep the car in good condition and prevent failures during driving.