heater problem?
Connect a garden hose to the outlet hose of the heater core. Be sure there's no vacuum to a water valve if one is fitted. Disconnect the heater inlet hose to the engine block and allow to drain into a suitable receptacle. Turn the hose on and off several times to dislodge stubborn dirt then allow water to flow at full pressure for 5 minutes. If there's a water valve in the heater core inlet hose apply vacuum to ensure that this shuts off the water supply. You could also have a stuck water valve if there is indeed one fitted.



