What causes white smoke in a pressure washer?

White smoke in a pressure washer typically indicates that the engine is burning oil, often due to issues such as worn piston rings, valve seals, or improper oil levels. It can also occur if the pressure washer is running too rich, meaning there's an excess of fuel in the combustion chamber. Additionally, a malfunctioning carburetor or air filter can contribute to this condition. It’s important to address these issues promptly to avoid further damage to the engine.