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Even when the water pump is normal, a residue of the 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 coolant draining is found, check the water pump leakage by following method.
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1.Wipe off the residue of the coolant draining on the water pump.
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2.
| warning |
Make sure that the coolant is cold when removing the radiator
cap.
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Remove the radiator cap.
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3.
| caution |
Do not pressurise 100 kPa or more.
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Install the radiator cap tester, and pressurise with 100 kPa.
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4.Hold the pressurised state for 20 minutes, and check that the water leakage from the
drain hole, the vapour hole or the installation surface of the water pump.
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5.Remove the radiator cap tester, and install the radiator cap.
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6.Warm up the engine, let it idle for 20 minutes and stop it.
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7.After the engine is stopped, check the water leakage from the drain hole, the vapour
hole or the installation surface of the water pump.
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8.If the water leakage is confirmed in the items 4 and 7, replace the water pump. (Refer
to  <4B1>, <6B3>).
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