For 1990-2009 cars

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

1. Install air injection check valve pipe adapters, rear.

Tighten
Tighten the air injection check valve pipe adapters to 30 N·m (22 lb ft).

2. Install air injection check valve pipe adapters, front.

Tighten
Tighten the air injection check valve pipe adapters to 30 N·m (22 lb ft).

3. Install air injection check valve rear bracket and nuts.

Tighten
Tighten the air injection check valve rear bracket nuts to 25 N·m (18 lb ft).

4. Install air injection check valve front bracket, bolt and nut.

Tighten
Tighten the air injection check valve front bracket bolt and nut to 25 N·m (18 lb ft).

5. Install air injection check valve rear.

Tighten
Tighten the air injection check valve to 20 N·m (15 lb ft).

6. Install air injection check valve nut, rear.

Tighten
Tighten the air injection check valve nut rear to 10 N·m (89 lb in).

7. Install air injection check valve front.

Tighten
Tighten the air injection check valve front to 20 N·m (15 lb ft).

8. Install air injection check valve nut front.

Tighten
Tighten the air injection check valve nut to 10 N·m (89 lb in).

9. Install air injection solenoid switch and bolt.

Tighten
Tighten the air injection solenoid switch bolt to 10 N·m (89 lb in).

10. Install air injection check valve pipe, clamps, and bolt.

Tighten
Tighten the air injection check valve pipe bolt to 10 N·m (89 lb in).

11. Install air injection vacuum hose.