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What causes coolant to boil and overflow?

Updated: 10/21/2022
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14y ago

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Engine coolant temperature is cooled by the radiator, moved by a water pump and controlled by a thermostat.

If there are troubles with any of those components the coolant will boil

Also if the head gasket goes bad gasses from combustion inside the engine will get into the coolant and cause it to boil.

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14y ago
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Q: What causes coolant to boil and overflow?
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