WATER PUMP ENGINE COOLANT LEAK CHECK

Even when the water pump is normal, a residue of the coolant draining may be found on the drain hole, the vapor hole and the installation surface of the water pump. If a residue of the coolant draining is found, check the water pump leakage by following method.

1. Wipe off the residue of the coolant draining on the water pump.

warning

Make sure that the coolant is cold when removing the radiator cap.

2. Remove the radiator cap.

caution

Do not apply a pressure of more than 100 kPa (15 psi).

3. Install the radiator cap tester, and pressurise with 100 kPa (15 psi).

4. Hold the pressurised state for 20 minutes, and check that the water leakage from the drain hole, the vapor hole or the installation surface of the water pump.

5. Remove the radiator cap tester, and install the radiator cap.

6. Perform Idle Continuous Mode (Refer to CONTINUOUS IDLING MODE

7. Allow the engine to idle for approximately 20 minutes.

8. Stop the engine.

9. Check the water pump drain hole, steam hole, and mounting surface for water leaks.

10. If there are any water leaks found in steps 4 or 9, replace the water pump. (Refer to WATER PUMP REMOVAL AND INSTALLATION

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