We've all heard how bad carbon building up is for engines an most of us have removed carbon before but, years ago, I'd guess about 55 or so years ago an old mechanic removed the air breather off of my Plymouth Valiant car while holding a coca cola bottle full of water in his hand. The engine was a Dodge slant 6. At the time I was a young guy and was shocked when he had me crank the engine and he controlled the Throttle by hand as I watched. He reeved the engine and started slowly pouring the water down through the carb. Just before the motor died he'd stop the water. He said that removed carbon. It did seem like the motor smoothed out. Has anyone else seen or heard about anything like this? A chainsaw is a lot smaller plus it's not 4 cycle. I've never seen anyone try that on a saw. Even a few drops of cold water might damage a saw. Just wondering if. IF, IF, IF