WATER PUMP ENGINE COOLANT LEAK CHECK


Even when the water pump is normal, a residue of the engine coolant draining may be found on the drain hole, the vapour hole and the installation surface of the water pump. If a residue of the engine coolant draining is found, check the water pump leakage by following method.
1.Wipe off the residue of the engine coolant draining on the water pump.
2.
warning Make sure that the engine coolant is cold when removing the radiator cap.
Remove the radiator cap.

3.
caution Do not pressures 100 kPa or more.
Install the radiator tester and pressures at 100 kPa.
4.Hold the pressurized state for 20 minutes, and check that the engine coolant leakage from the drain hole, the vapour hole or the installation surface of the water pump.
5.Remove the radiator tester, and install the radiator cap.
6.Warm up the engine, let it idle for 20 minutes and stop it.
7.After stopping the engine, and check that the engine coolant leakage from the drain hole, the vapour hole or the installation surface of the water pump.
8.If the engine coolant leakage is found in step 4 or 7, replace the water pump (Refer to ).