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assuming you have no water in the radiator. there can be several causes for this. one is the radiator has a hole, the water pump bushing is bad and leaking, you have a cracked block or head, or you have a blown or rusted through freeze plug, or your heater core could be leaking as well. or a hose has a hole in it. fill it up and see if you can find any leaks.

if there is water in the radiator. it can be a bad thermostat, bad water pump, cracked head or blown head gasket.

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12y ago

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