Water Pump Replacement
Water Pump Replacement1. Remove the drive belt.
2. Drain the engine coolant.
3. Remove the drive belt auto-tensioner.
4. K20A3 engine: Remove the six bolts securing the water pump, then remove the water pump (A).
5. K20A2, K20Z1 engines: Remove the oil cooler joint pipe (A), then remove the seven bolts securing the water pump. Remove the water pump (B).
6. Inspect and clean the O-ring groove and mating surface with the water passage.
7. Install the water pump with new O-rings in the reverse order of removal.
8. Install the drive belt auto-tensioner.
9. Refill the radiator with engine coolant, and bleed air from the cooling system with the heater valve open.
10. Clean up any spilled engine coolant.