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Replaced my leaking water pump and now I hear a sound like air or water running through the heater core in the cab especially when I let off the gas - radiator is full - what could be the causing this?
Wiki User
∙ 11y ago
Just because the radiator is full doesn't necessarily mean the entire cooling system is full. Remember that the water doesn't start pumping through the system until the engine is hot enough to open the thermostat, and it's only then that you can gauge whether or nt the system is full.
All cars within the past 35 years have external coolant reservoirs for reclaiming water/coolant from overheating. It should also be filled to a point where there's about half coolant or water in it when the engine is at temperature (the fill line is indicated on the reservoir). Check it when the engine is hot and make sure it's filled to the proper level.
Wiki User
∙ 11y ago
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Coolant leaking from engine?
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