4 Runner 2WD V6-4.0L (1GR-FE) (2006)
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Water Pump: Testing and Inspection
INSPECT WATER PUMP ASSEMBLY
a. Visually check the air hole and water hole for coolant leakage.
If leakage is found, replace the water pump.
b. Turn the pulley seat, and check that the water pump bearing moves smoothly and does not make noise.
If necessary, replace the water pump.
