Can the engine compartment be washed with a high-pressure gun?
3 Answers
Engine compartment can be washed with a high-pressure gun. Reasons why it can be washed with a high-pressure gun: The electrical component interfaces in the engine compartment are waterproofed and not afraid of water. Therefore, it is common practice in many places to directly rinse the engine compartment with a high-pressure water gun. This is routinely done in repair shops and 4S stores, and it will not damage the components in the engine compartment. Precautions for washing with a high-pressure gun: Avoid washing with water when the car is hot. Cleaning when the engine temperature is high may cause the engine to suddenly cool down, potentially leading to cylinder deformation or cracking in severe cases. Moreover, washing at high temperatures can produce a large amount of steam, which may affect the electrical circuits.
When I was young, I impulsively used a high-pressure washer to clean the engine bay, only for water to seep into the circuit board. The car stalled immediately and even started smoking, costing me over a thousand bucks to fix. Since then, I've stuck to using low-pressure water or simply wiping with a damp cloth. High-pressure water's intense force can easily flood electronic sensors and wire connectors, leading to short circuits, rust, or even more severe malfunctions. Although the engine bay gets dirty, it's packed with precision components that require extra caution during cleaning. It's best to use professional engine cleaning spray regularly and avoid direct water spraying. In short, steering clear of high-pressure methods is the smarter choice for safety and peace of mind.
My friend, listen to me, using a high-pressure water gun to clean the engine compartment is a bad idea. I've seen many cases at the repair shop where water got into the engine and fried the computer module or sensor system, and the repairs were extremely expensive. The engine compartment is full of exposed wires and connection points, and a high-pressure water stream can easily penetrate and cause short circuits or rust. For cleaning such areas, you should use low-pressure sprays or specialized cleaning agents, gently spraying and wiping—don't take the risk. Just keep the engine surface clean during regular maintenance; high-pressure cleaning only adds unnecessary risks.
