1. Prepare cleaning tools, engine surface cleaning agent and engine harness care agent; a small brush, the width of the brush head should not be too large, because there are many and narrow gaps in the engine compartment, it is more convenient to use the narrow head; a mask and a pair of gloves, the engine surface cleaning agent has certain harm to the human body, the smell is a little pungent, so prepare masks and gloves.

2. 找一个停车的位置，发动机的清洗避免不了有污水流到地上，所以在准备清洗之前，将车辆停放到人车之处。

2. Find a parking place, the engine cleaning can not avoid sewage flow to the ground, so before preparing to clean, it is best to park the vehicle in a place where there are few people and vehicles.

3. 自上料搅拌车，先将发动机的装饰盖卸掉，先用抹布或者刷子对发动机舱进行简单的除尘，然后就可以用发动机外表清洗剂操作。将发动机内部的保险盒、点火线圈、发电机等一些不能沾水和清洗剂的零部件做一下防水处理（这些零部件可以单独清洁），之后将清洗剂摇匀，再喷在发动机舱内的零部件上，注意喷洒距离保持在15厘米左右就可以了，尽量喷洒均匀一些，油泥多的地方适当多喷一些。

3. From the feeding mixer, first remove the engine decorative cover, first use a rag or brush for simple dust removal of the engine compartment, and then use the engine surface cleaning agent to operate. First of all, waterproof the fuse box, ignition coil, generator and other parts that can't be stained with water and cleaning agent (these parts can be cleaned separately), then shake the cleaning agent evenly, and spray it on the parts in the engine compartment. Pay attention to keep the spraying distance at about 15 cm. Spray it evenly as far as possible, and the place with a lot of oil sludge is appropriate Spray more.

4. 用小刷子清理，在喷完清洗剂后，需等待5分钟左右，让清洗剂继续化解油泥，直完全化解，然后用小刷子进行刷洗，可以明显看到油泥化开的效果。发动机舱缝隙较多，一定要耐心刷干净，因为之后还会喷上养护剂（相当于上了一层蜡油），如果不刷洗干净，脏东西就封在里面了。自上料搅拌车，发动机的进气管很容易沾上油泥，颜色难看且不易清洗，需要细心的刷干净，还有一些走电、走油液的管路，也要清洗干净，防止油泥和其它污物对它们进行腐蚀，造成泄漏。

4. Clean with a small brush. After spraying the cleaning agent, you need to wait for about 5 minutes to let the cleaning agent continue to dissolve the oil sludge until it is completely dissolved. Then brush with a small brush to see the effect of oil sludge melting. There are many gaps in the engine compartment, so you must brush it patiently, because after that, you will spray the curing agent (equivalent to a layer of wax oil). If you don't brush it clean, the dirty things will be sealed inside. Since the feeding mixer, the intake pipe of the engine is easy to be stained with oil sludge. The color is ugly and difficult to clean. It needs to be cleaned carefully. Some power and oil pipelines also need to be cleaned to prevent oil sludge and other dirt from corroding them and causing leakage.

5. 清水清洗，清洗剂在化解油泥后，还是会附着在发动机舱内的各个零件上，所以在它们即将风干之前，需要用清水清洗干净，切忌用高压水枪清洗。自上料搅拌车，在清洗之前先要做一下防范措施，就是先启动发动机保持怠速状态，这样做的原因有两点：一是防止点线圈等关键部位溅到水后，造成短时间启动困难，二是发动机运转后，机体温度会上升，可以加速水蒸发变干。

5. Clean with clean water. After dissolving the oil sludge, the cleaning agent will still adhere to all parts in the engine compartment, so before they are about to dry, they need to be cleaned with clean water, and do not use high-pressure water gun. Before cleaning, the self feeding mixer should take some preventive measures, that is, start the engine to keep idle. There are two reasons for this: one is to prevent the key parts such as the point coil from splashing with water, which makes it difficult to start in a short time; the other is that after the engine runs, the body temperature will rise, which can accelerate the evaporation and drying of water.

6. 线束护理剂，在用水清洗之后，一定要将发动机内部件上的水吹干，气枪吹干是的方式，如果没有，只能用吸水性好的毛巾擦干，然后待其完全晾干。将线束护理剂均匀地喷洒在发动机舱内的各个部件上就好了。这样做可以防止油泥积累，减缓线束老化，减少老旧车型自燃的几率。自上料搅拌车不算便宜，一定要保养好，让它为您带来更多的经济收益。

6. Harness care agent: after cleaning with water, be sure to blow dry the water on the internal parts of the engine. Air gun blowing is the best way. If not, you can only dry it with a towel with good water absorption, and then wait for it to dry completely. Finally, spray the harness care agent evenly on all parts in the engine compartment. This can prevent the accumulation of oil sludge, slow down the aging of wiring harness, and reduce the probability of spontaneous combustion of old models. The price of self loading mixer is not cheap. It must be well maintained to bring you more economic benefits.