A few days ago I was finishing a customer's snowblower, Tecumseh, that I had cleaned the carb in my ultrasonic cleaner, removed the Welch plug, used a welder's tip cleaner, non adjustable carb, it was surging but it would run smooth for seconds, then surge, then run smooth, repeating. I drained the gas from the carb and the tank in to a clear 2l soda bottle. The gas came out cloudy then settled leaving water in the bottom. I am very careful of my gas container, emptying it completely before filling, even draining the remainder in to a soda bottle to check for water. Before I work on any piece of equipment, I always drain the gas checking for color, clarity, and water. After refilling the snowblower from a second gas container that I first filled a 2l soda bottle to check for water, there was none, the snowblower ran perfect, no surging. It was the gas. Where did the water come from? I don't have a garage or shed so all my equipment is tarped, and tarps after awhile leak. But then how did that much water get into the gas tank through the little vent hole?
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