Flushing

Flushing -Engine and Radiator

WARNING: To avoid personal injury, do not unscrew the coolant pressure relief cap while the engine is operating or hot. The cooling system is under pressure; steam and hot liquid can come out forcefully when the cap is loosened slightly.

Once pressure is released, remove the pressure relief cap.
Drain the cooling system.
2. Remove the water thermostat.
3. Install the water hose connection without the water thermostat.

4. NOTE: Refer to the cooling system flusher manufacturer's operating instructions for specific vehicle hook-up.

Use an appropriate cooling system flusher to flush the engine and radiator.
Use Ford Premium Cooling System Flush F1AZ-19A503-A or equivalent meeting Ford specification ESR-M14P7-A.
5. Install the water thermostat.
6. Backflush the heater core if necessary.
7. Fill the cooling system.