Heater Core: Testing and Inspection

HEATER CORE
1. Using a Special Tool, install to the heater core one side and the other side is clogged.
2. Place the heater core in water, then apply 200 kPa (29 psi) pressure.
3. Holding for two minutes, while checking for leakage from the heater core.
If there is leakage, repair or replace the heater core.