White tongue is a coating of debris, bacteria and dead cells on your tongue that makes it look white. Although the appearance of white tongue may be alarming, the condition is usually harmless and temporary.
How a pressure washer works. Here's a quick summary of the basic principle: 1  Detergent flows in from a bottle or container through one hose. 2  Cold water flows in from a faucet (tap) through another hose and is filtered on the way in.3  An electric motor or diesel engine powers the washer. Cold water flows in from a faucet (tap) through another hose and is filtered on the way in. 2  An electric motor or diesel engine powers the washer. 3  Powered by the engine or motor, a water pump (impeller) draws in the detergent and water and mixes them together.
Like anything else, you get what you pay for. Most retail pressure washers come as a combined motor/pump. That makes it twice as likely to break and twice as much to fix. On really good pressure washers, the motor and pump are separate units joined by a belt and pulleys. Hope that helps