Can you wash an engine with water let alone a pressure washer? Now this is a question I always get. The short answer is yes, But before you go out and start blasting water at your engine, there are three important things you need to know. Firstly, you need to make sure that the engine is completely cool before you start washing it with water. If you attempt to clean a hot engine, the rapid cooling caused by the water can cause damage to the engine's components. Secondly, Never use a pressure was