For 1990-2009 cars

### Cleaning Procedure

1. Clean the water outlet housing with solvent.

Warning: Refer to Safety Glasses Warning in the Preface section.

2. Dry the water outlet housing with compressed air.

### Inspection Procedure

1. Inspect the front of the water outlet housing for the following:

• | Damage or restrictions to the radiator hose connection (1)

• | Damage to the threads for the heater hose fitting (2)

• | Damage to the threads for the throttle body bolts (3)

• | Damage to the threads for the engine coolant air bleed fitting (4)

• | Damage to the water outlet housing-to-cylinder head mounting holes (5)

• | Damage or restrictions to the bypass hose connection (6)

2. Inspect the rear of the water outlet housing for the following:

• | Damage, blockage or excessive corrosion to the engine coolant passages (1)

• | Damage or restrictions to the evaporative emission (EVAP) purge solenoid port (2)

• | Damage to the threads for the EVAP purge solenoid bolt (3)

• | Damage to the sealing surface for the intake manifold duct (4)

• | Damage or restrictions to the MAP sensor port (5)

• | Damage to the threads for the MAP sensor bolt (6)

3. Repair or replace the water outlet housing as necessary.