After changing the water pump why wouldn't you be able to get the water to run through the engine?

Answer

Bad new water pump, thermostat installed upside down, hoses reversed, slipping water pump belt, system needs bleeding and has an air pocket.

Answer

You must bleed the cooling system of all the air. Set the heater control to hot also when this is done to remove all the air in the system

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First answer by Clay. Last edit by doug mchale. Question popularity: 71 [recommend question]

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Engine won't start after changing the water pump?