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Many owners who are accustomed to washing their cars always ask that the exterior of the vehicle is easy to clean, but how can the stains in the engine compartment be cleaned? Which locations can be wiped with a wet towel or even flushed with water?
This problem, I am afraid that many owners do not understand. So today we will talk about cleaning the engine compartment.
1 The layout of the engine room Let's first briefly understand the layout of the engine room.
The wiring harness interface in the general engine compartment is waterproofed, including batteries, engines, air cleaners, spark plugs and other components. It is not recommended that you use high-pressure water guns to spray these parts. After all, there are so many electrical components and wiring harness connections in the engine room. No one will take such risks without knowing the circumstances.
2 Can I flush the engine compartment directly with water?
Regarding the issue of “can't flush the engine compartment directly with waterâ€, the online discussion can basically be divided into two groups: One group thinks that it can be washed directly with water, while the other group says that it cannot be washed.
Below, let's listen to their respective reasons.
1 It can be considered by the school that the components of the engine compartment are not afraid of water at all.
Their reason is very simple: Because the electrical equipment in the engine room is waterproofed, whether it is electrical equipment or relays, as long as the components inside the engine room can be intact, and are not afraid of water at all, you can directly use a high-pressure water gun or hose to rinse. After washing is still normal.
2 It cannot be thought of by the school that water in the engine compartment can easily damage electronic components.
Their reason is: Nowadays cars use electronically controlled fuel injection systems, and all electronic components installed in the engine compartment are all controlled by voltage.
If these electronic components come into contact with water, then there is a possibility of a short circuit and damage to the engine computer. In addition, flushing the engine compartment directly with water can easily cause water to remain in the engine compartment. Over time, the electrical interface may oxidize and cause poor contact, or the fastening screws may rust. If these parts are to be repaired, they will cost anywhere from a few hundred dollars to several ten thousand dollars. Therefore, the engine compartment cannot be flushed directly with water. 
