Heating AC and Engine Cooling
Antifreeze and Engine Coolant
Chevy Impala
Chevy S-10

What would cause water to leak out of coolant tank after shutting engine off?

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Wiki User
2006-08-01 00:51:17

My guess would be that the radiator cap is bad. It is spring

loaded and if the spring get week, the inner part of the cap will

open and allow water to run out into the overflow container. This

can happen after car is shut off because there is no more cooling

available and then the coolant begins to expand more from the


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