Feel the heater hoses see if one is hot and the other cold. May be airbound and have to be bled. Could be defective Thermostat that is not closing to allow engine temp to get hot enough disconnect heater hoses and run a garden hose through to make sure heater core is not plugged Check heater control cable to make is operating properly Pressure test cooling system to check for leaks
It leaks coolant.
Check both the heater core as well as the heater hoses for leaks...........
You know the heater core is bad when your truck leaks antifreeze onto the floor of the passenger side.
smell of antifreeze and no visable leaks usually indicates that the heater core needs replacing
A heater hose or heater core is in need of repair. stonemkr reverse painting on glass
Not enough coolant is running through the system chek for leaks and chek your heater core
Sounds like you have a loose or damaged hose to your heater or perhaps the heater radiator is damaged.
its most likely the heater core that's leaking
Heater box drain It is just below the heater hose conections, If the heater core leaks it drains the coolant outside to keep the carpet dry.
Need to replace the water pump.
Pay attention to your gas heater, if the leakage is at night you can die intoxicated. Keep such apparatus under continuous maintainance.
Bad heater core?