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When the overflow tank bubbles and overheats, it typically indicates that the engine is experiencing excessive heat, which can lead to boiling coolant. This could be caused by a malfunctioning thermostat, a failing water pump, or a leak in the cooling system. The bubbling is a sign of trapped air or steam in the coolant, which can reduce the system's efficiency and potentially lead to engine damage if not addressed promptly. It's important to investigate the underlying cause to prevent further issues.

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AnswerBot

1w ago

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