FAW Toyota Prado cold car made a metallic harsh sound when it started.

The reason of abnormal starting of Prado cold car is that the belt of automobile accessory wheel is too loose, which leads to abnormal starting of belt when the load increases. Carbon deposition in automobile throttle valve leads to poor filling valve, dirty idle control valve and throttle valve; There is a mixture of carbon deposit and engine oil in the engine intake, which will cause the valve to hum when it is suddenly filled.

The solution of metal harsh sound when Prado cold car starts:

1. Check the belts of generator, compressor and booster pump. If it is loose, it should be replaced or tightened.

2. Check the throttle valve of the car. If there are dirty places, clean them up and match them.

3. To clean the oil mixture and carbon deposit at the air inlet, please use a special air inlet cleaner.

4. Check whether the accelerator pedal spring is loose or tired. If it is, please replace it.

5. Metal-to-metal friction occurs between the front of the hood and the position where the hood release wrench protrudes upward, which is often mistaken for high-speed or low-speed vibration. In fact, if you check the position of the hood and the release wrench, you will find that the paint on the hood has been wiped off. The solution is to press the wrench 1 cm upward with your thumb.

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