Opening inspection<br>If you are not Xiaobai, you have some basic knowledge of the internal parts of the car, and you can do more detailed inspection.<br>Check the appearance and operation of the engine. The engine is the heart of the vehicle. The condition of the vehicle mostly depends on the condition of the engine, that is, the abrasion of the cylinder liner, piston and piston ring. First, observe whether there is water leakage, oil leakage and air leakage in the engine compartment. Generally speaking, the engine in good condition is easy to start, the idle running is stable, and there is no irregular shaking. If the exhaust gas is translucent light gray, it indicates that the engine is in good condition.<br>
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