Why Pressure Washers Shouldn’t Be Used in Engine Bays

In a recent video, popular mechanic Scotty Kilmer cautioned petrol and diesel drivers about the potential damage that can be caused to their cars’ vital parts due to a simple mistake while cleaning. Kilmer urged car owners to exercise caution when using a pressure washer to clean their vehicle, specifically advising against washing the inside of the engine bay.

Kilmer warns that high-pressure water from a pressure washer can harm electrical connectors and crucial components like the alternator. He explains that while driveways can handle the force of a pressure washer with no damage, the same cannot be said for the intricate electronics and computer-driven modules found under the hood of a car.

Water from a pressure washer can enter electrical connections, leading to the potential destruction of the alternator and interference with computer sensors. Kilmer emphasizes the difficulties that can arise when trying to diagnose and fix such issues, stating, “Then you’re going to have one heck of a time figuring out what’s wrong.”

FindandFundMyCar estimates that repairing internal engine water damage could cost drivers a staggering £500. Carwow suggests that motorists might even have to pay thousands of pounds if the engine or electrical system is affected by water damage.

However, the experts at Halfords provide some guidance on how to safely clean the engine bay. They recommend using cleaning wipes to remove any oil or grease and using a toothbrush or pipe cleaners for tight areas. It is important to ensure that a hose pipe is not used on the engine as this can cause damage.

In a reassuring note, Kilmer advises car owners that if they accidentally spray water into their engine bay, they may still be able to salvage the situation. He suggests using a hairdryer to dry the electrical connections and removing spark plug wires in older cars for air drying. Acting quickly in this manner may resolve any issues caused by moisture.

In conclusion, it is crucial for car owners to exercise caution while cleaning their vehicles. Using a pressure washer in the engine bay can have severe consequences, potentially leading to significant repair costs and difficulties in diagnosing and fixing issues. Ensuring proper cleaning techniques and quickly addressing any accidental water exposure can go a long way in maintaining the performance and longevity of a vehicle’s vital parts.

– YouTube video by Scotty Kilmer
– FindandFundMyCar
– Carwow
– Halfords