Operation CHARM: Car repair manuals for everyone.

Cleaning/Flushing Cooling System

CLEANING
Drain cooling system and refill with clean water. Run engine with radiator cap installed until upper radiator hose is hot. Stop engine and drain water from system. If water is dirty; fill, run, and drain system again, until water runs clear.

INSPECTION
After performing a cleaning/flush procedure, inspect all hoses, clamps, and connections for deterioration and leaks. Inspect radiator and heater core for leaks.