Can You Wash Inside the Car Hood with Water?
2 Answers
You should not wash inside the car hood with water for the following reasons: 1. It can easily damage the generator, which may lead to its failure; 2. If the engine is hot, the sudden temperature change from water can cause significant harm due to thermal expansion and contraction; 3. There are many electrical wires in the engine compartment, and exposure to water can cause issues and accelerate wire aging. Precautions for washing with water: 1. Cover the generator, distributor, brake fluid reservoir, etc., with cloth or plastic bags, especially the generator and distributor; 2. Try to wash when the engine is cool, and avoid using high-pressure water jets; 3. After washing, thoroughly dry the engine compartment with a clean cloth, especially the underside of the hood; 4. Do not aim the water jet directly at the air intake.
As a car enthusiast, I once tried washing the engine bay with water, initially feeling great about thoroughly removing grease and dirt. But that experience taught me a lesson: after the water wash, the battery terminals corroded, leaving the car unable to start, and the repair cost me several hundred dollars. The engine compartment is full of wiring and sensitive sensors; water can cause short circuits, potentially damaging electronic modules or leading to electrical leaks. Washing a hot engine is even riskier, as parts may warp. Now, I use compressed air to blow away dust or apply specialized dry-cleaning sprays followed by wiping—safe and efficient. Regular cleaning reduces buildup, but water washing is high-risk and best avoided. If you must try, ensure the engine is cool, use low-pressure water, cover the battery, and use a fan to speed up drying—though don’t expect long-term protection. Loving your car starts with the details; healthy maintenance is key. Watching professional videos for guidance adds peace of mind.
