ENGINE COOLANT LEAKAGE INSPECTION

Warning

• Never remove the radiator cap or loosen the radiator drain plug while the engine is running, or when the engine and radiator are hot. Scalding coolant and steam may shoot out and cause serious injury. It may also damage the engine and cooling system.

• Turn off the engine and wait until it is cool. Even then, be very careful when removing the cap. Wrap a thick clean rag around it and slowly turn it counterclockwise to the first stop. Step back while the pressure escapes. When you are sure all the pressure is gone, press down on the cap using the clean rag, turn it, and remove it.

1. Inspect the coolant level.

2. Remove the cooling system cap and connect the SST to the coolant reserve tank filler port.

3. Apply pressure using the SST.

4. When pressurizing the radiator, verify that the pressure is maintained.

• If not, inspect the system for engine coolant leakage.

Pressure [YF (2.0L Zetec)]

138 kPa {1.41 kgf/cm², 20.0 psi}

Pressure [L3, AJ (3.0L Duratec)] [engine cold]

L.H.D.: 150 kPa {1.53 kgf/cm², 21.8 psi}

R.H.D.: 122 kPa {1.24 kgf/cm², 17.7 psi}