Open Position Inspection <br>If you are not a newbie in the car, you have some basic understanding of the car's internal parts and components, and you can do a more detailed inspection. <br>Check the appearance and operation of the engine. The engine is the heart of the vehicle, and the quality of the vehicle depends on the quality of the engine, that is, the wear of the cylinder liner, piston, and piston ring. First of all, observe whether there are water leakage, oil leakage and air leakage in the engine compartment. Generally speaking, an engine with better vehicle conditions is easy to start, runs at idle speed smoothly, without irregular jitter. If the exhaust gas is translucent light gray, it means the engine is in good condition.
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