Cooling System Flushing

Identifying Special Tool(s) 

Fig 1: Identifying Special Tool(s)

Courtesy of FORD MOTOR CO.

Material Specifications 

Fig 2: Material Specifications

Courtesy of FORD MOTOR CO.

1. 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. 

   Drain the cooling system. Refer to COOLING SYSTEM DRAINING, FILLING AND BLEEDING .

2. Remove the water thermostat.
   Fig 3: Removing Water Thermostat

   Courtesy of FORD MOTOR CO.
3. Install the water thermostat housing without the water thermostat.
NOTE: Refer to the cooling system ProFlush and Fill/Coolant Flush and Fill Operating Instructions for specific vehicle hook-up.
4. Use cooling system ProFlush and Fill/Coolant Flush and Fill to flush the engine and radiator.

   Use premium cooling system flush.

5. Install the water thermostat.
   Fig 4: Installing Water Thermostat

   Courtesy of FORD MOTOR CO.
NOTE: Refer to the cooling system Flush-All Operating Instructions for specific vehicle hook-up.
6. Backflush the heater core if necessary.
7. Fill the cooling system. Refer to COOLING SYSTEM DRAINING, FILLING AND BLEEDING .