How can you tell if a heater core is plugged?
How can you tell if a heater core is plugged? You can check this by feeling the two heater hoses entering and exiting the heater core. They should both be warm or hot. The one that enters will be hotter than the one that exits. What’s important is one that is not cold. If you determine the heater core is plugged, there are methods to attempt and unplug it. Where does a leaking heater core come from? A leaking heater core usually will cause a much more annoying leak. On most new vehicles, the heater core is inside the cabin...