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Why is antifreeze blowing out through the rad cap and overflow of my 1990 Nissan Pathfinder while cold air is blowing from heater Bad thermostat or water pump?
Wiki User
∙ 17y ago
Bad news, sounds like a head gasket. The coolant is blown out because the exaust is going into the water passage. The heater is cold because there is not enough water to reach it. Your temp. gauge should be hot very quickly. Take the radiator cap off, stand back, and crank the motor. If water shoots out, it's a headgasket, cracked head, or cracked block.
Wiki User
∙ 17y ago
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