盲目自行调整和检修　轿车结构、原理比较复杂,调整一些精密器件、维修保养须具备一定的专业知识和技能,而且须有相当的经验和设备,才能准确精通。如果在对车辆结构、部件原理、性能一知半解的情况下,照着书本的介绍去盲目调整、检修,往往会因毫厘之差,弄巧成拙。燃油油液随便 Blindly adjust and overhaul sedan structure, the principle is more complex, adjust some precision components, maintenance and repair must have some professional knowledge and skills, but also have considerable experience and equipment in order to accurately proficient. If the structure of the vehicle, the principle of components, performance a little knowledge of the case, according to the book’s introduction to blind adjustment, maintenance, often due to the slightest difference, self-defeating. Fuel oil casually