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There are basically 2 causes. One cause is condensation which is normal. This is the hot exhaust hitting the cold parts causing water to accumulate. It goes away after the system warms up. The other cause is a blown head gasket which is very serious. If the water smells and taste sweet, it is coolant and you have a blown head gasket. Stop driving the car immediately and have it repaired. Other signs of a blown head gasket are coolant in the oil, air bubbles coming from the radiator inlet with the cap off.

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19y ago

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