Coolant gushing out of reservoir

2004 FORD EXPLORER
154,000 MILES • 4.0L • V6 • 4WD • AUTOMATIC
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Y2KRAIDER
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  • 1 POST
My heater will blow hot air, then once the engine warms, will start to blow cold. As soon as this happens, the coolant fluid will start to gush out of the reservoir. Loosing enough that the temp will rise hot.
I've replaced the thermostat twice. New water pump, new radiator, new heat control valve, new heat door actuator. I'm stumped. Could it be air in the coolant system? If so, how do I burp it?
Jan 12, 2016 at 1:45 PM
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WRENCHTECH
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You might not be getting all the air out of the system. We use a vacuum fill tool to be sure we get it out. If there is no air in the system, you could have a blown head gasket from previous overheating.
Jan 12, 2016 at 3:05 PM