The cleanliness of the engine compartment is not only related to the cleanliness and decentness of the car, but also related to the safety of the car. The first is that with the engine running all the year round, it is impossible to avoid the sludge generated by the steam of various oils. These sludges are mixed with dust and dirt and become heated. They become one of the hidden dangers of automobile auto-ignition; followed by a large number of ash often combined with the humidity of the air. The mud will be attached to the parts and pipelines to speed up the aging and damage of the parts. Finally, some dirty engine compartments are more likely to become nests of wild mice and small reptiles, so the cleaning of the engine compartment is imperative. Below, edit to recommend a DIY cleaning method.
First, prepare cleaning tools
1, the engine surface cleaning agent (called engine compartment cleaner or other, there are two types of foam and fog) and engine harness care agent (engine polish, etc.). These two things are inexpensive and can be bought at any auto parts store. A total of 60 yuan will be spent. If they will bargain, they will be cheaper.
2, a small brush, the width of the brush head should not be too much, the engine compartment gap is more and narrow, with a narrow head more convenient.
3, a mask and a pair of gloves. The appearance of the engine cleaning agent has some harm to the human body, smells very pungent taste, so it is best to prepare these two things.
Second, find a parking location
Although not flushed with water, there is still sewage flowing to the ground after cleaning, which is unfavorable to the environment. Li Hui suggested that before the engine cleaning, the car should be parked in a place with a drain outlet, such as the well cover and the sewer along the residential and roadsides.
Third, remove the engine cover
For the beauty of the engine compartment, plastic decorative covers are now designed for many models. Many owners wiped the decorative cover cleanly, thinking that it was the love of the engine. In fact, it was just a piece of plastic, and the mud underneath was still there. Therefore, if you want to clean thoroughly, you first need to remove the plastic cover.
The plastic decorative cover is fixed with a clip, and can be removed by pulling the edge of the cover directly by hand. However, the cover of some models will be connected to other pipes. For example, the old model POLO is designed with an air filter element inside a plastic decorative cover. Before pulling it out, it is necessary to remove all the pipes.
After removing the plastic cover, you can see the main body of the engine and you will find it more dirty than the plastic cover. For vehicles that have been in operation for several years, there will be some sludge on the cylinder head cover or near the oil filling port. It looks like a gray matt paint. It would be too much effort to flush out these things with water.
Fourth, cleaning sludge
The appearance of the engine cleaner comes into play. The engine compartment is first dusted with cloth or a brush, and then it can be operated with engine surface cleaner. Li Hui reminded that if it is just stopping, do not rush to spray cleaners first, and wait for 5 minutes or so. The engine will be cooled a little and then cleaned. Otherwise, it will “excite†the engine.
First shake the engine cleaner bottle and wait until it is evenly sprayed on the components in the engine compartment. Spraying distance is suitable for about 15 cm, spraying as evenly as possible, with a lot of sludge to deal with it. It should be noted that some of the components in the engine compartment are protected from water or cleaning agents, such as fuse boxes, ignition coils, generators, and E-CU trip computers. It is best to do a waterproof treatment (covered with plastic cloth) . These parts can be cleaned separately and it is recommended to spray the cleaner on a cloth and then wipe them.
In addition to the above-mentioned parts that cannot be touched with water (cleaning agent), the cleaning method for other parts is the same, and the principle of cleaning is to wash it as far as it can be touched by hand.
V. Small brush cleaning
After spraying the cleaning agent, wait about 5 minutes for the detergent to continue to “eat†the sludge until it is completely dissolved. Then brush with a small brush, you can clearly see the effect of oil sludge.
There are more gaps in the engine compartment and need to be patiently brushed, because then curing agent (equivalent to a layer of wax oil) will be sprayed. If the wash is not clean, the dirt is sealed inside.
The intake manifold of the engine is metal and plastic, and it is easy to adhere to sludge. The color is very ugly, and it is not easy to clean. It needs to be “cleaned†with a brush. In addition, there are pipelines that run electricity and take fluids in the engine compartment. These also need to be cleaned to prevent sludge and other dirt from corroding them and causing leakage. These textured pipes are also a tricky job and need to be cleaned slowly.
Finally, don't forget to wash the plastic cover that you just removed and spray it with detergent.
Six, wash with clean water
After cleaning the sludge, the cleaning agent still adheres to various components in the engine compartment. Therefore, rinse them with clean water before they are about to dry. Washing with water here does not mean killing, and high pressure water jets are two concepts, just to wash away the mud that has been removed, because the light is not clean with a suede or cloth, and the opened sludge will continue Paste on various parts.
If there is not enough experience or is not familiar with the structure of the engine, Li Hui recommends the use of small equipment, such as mineral water bottles or small watering cans, which will ensure that the movements are more accurate, and will not be splashed or flawed. Using them to wash is much smaller than the "side effects" of using a high pressure water gun.
However, before cleaning with water, we must also take some precautionary measures. First is to start the engine to maintain idling. There are two reasons: First, to prevent the key parts of the ignition coil from splashing water, causing short-term start-up difficulties. Second, after the engine is running, The temperature of the body will rise, which will accelerate evaporation and drying.
Harness care agent
After cleaning with water, be sure to dry the water in the engine compartment and air gun dry is the best way. If not, use only suede or cloth with good absorbent properties to wipe off (preferably do not use a towel, it will lose hair), and then wait until it completely dry.
If you're a little bit concerned, it's recommended that you spray the engine compartment with a harness care agent (also called "engine cabin polish" or the like). The principle is the same. Such products can be purchased in the Auto Parts City, the price between 20 yuan to 50 yuan.
The method of use is very simple. After the cleaned engine is completely dry, the harness care agent is sprayed evenly on the various components in the engine compartment. The effect is to prevent sludge accumulation, which can slow the aging of the wire harness and reduce the ageing. The probability of auto-ignition of the model. Li Hui reminded not to use table board wax instead, because the table board wax is sticky. After spraying, it will stick a lot of dust, but it looks more dirty.
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