When cleaning the throttle, there is water in the engine compartment.

The following five situations are that the engine compartment cannot be flushed with water.

1, hot car status

Although the current automobile engine cylinder block is made of pressurized cast iron or aluminum, it is not as easy to crack as ordinary cast iron. But even so, don't rush into the high-temperature engine compartment to avoid shortening its service life. In addition, when the engine compartment is flushed with high-temperature water, a large amount of water vapor will be generated. If water vapor penetrates into circuits and other equipment, it will do great harm to vehicles.

2. Electrical interface without waterproof treatment

Although most of the current automobile engine wiring harness interfaces are waterproof, not all waterproof treatments are strict. When cleaning the engine compartment, (especially the old car owners) must see clearly, and the harness connectors that have not been waterproof must never be washed directly with water. If there are exposed battery interfaces and other electrical interfaces in the engine compartment, direct washing with water may lead to oxidation and rust of the interfaces, which may eventually lead to poor contact or even short circuit.

3. The headlamp assembly of the auxiliary factory headlamp was replaced.

Refit the headlights, pry open the whole headlight assembly of the original car, and then put on various high-brightness headlights. The sealing performance of the auxiliary factory headlights is often not as good as that of the original factory headlights, and fogging or water ingress occurs when the auxiliary factory headlights are installed. Therefore, the owner should try not to clean the headlight assembly position with water, and be careful not to splash water on the modified headlight when cleaning the engine compartment, so as to avoid the headlight becoming a "goldfish bowl".

4. Spark plugs

Spark plugs must not touch water. If the spark plug is wet, the car won't catch fire. If the owner replaces a spark plug that is not specified by the original factory for the vehicle, there may be some small gaps around the new spark plug, and water or steam can easily enter the spark plug. What was the result? You know that.

When the vehicle leaves the factory, the spark plug will be wrapped tightly, and it is generally impossible to get water. However, the "three-dimensional" spark plug in the branch factory is not necessarily the same as that in the original factory, and the gap is inevitable. The so-called "pervasive". If the engine compartment is washed with a high-pressure water gun, the chances of water entering these gaps will be much greater.

5. Fuse box

The fuse in the car should not be wet. If washed directly with water, it is easy to cause short circuit and lead to circuit burning. When cleaning the engine compartment, try to avoid washing the fuse box directly with water.