Engine maintenance: Some misunderstandings about the engine, the engine is the heart of the car, if the car is damaged, can not work, then the car is basically scrapped, unless the replacement of new engine parts. At the same time, when the engine is maintained, if it is not very relevant to the engine structure performance, it is best not to disassemble, and there are many hidden dangers in blind disassembly. Let's talk about some of the most common mistakes.