Operation CHARM: Car repair manuals for everyone.

Cooling System Flushing

Cooling System Flushing

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. Failure to follow these instructions may result in personal injury.

Drain the cooling system.





2. Remove the water thermostat.
3. Install the water thermostat housing without the water thermostat.
4. Using a suitable cooling system flushing tool, flush the engine and radiator. Use cooling system flush.





5. Install the water thermostat.
6. Fill the cooling system.