For 1990-2009 cars

#### Special Tools

J 45059 Angle Meter

### Removal Procedure

Important: During disassembly, keep the valve train components together and identified in order to install the parts in the original locations.

Perform a compression test. Refer to Engine Compression Test . Record the results before you perform the following repairs:

• | Remove the cylinder heads.

• | Disassemble the valve mechanism.

1. Remove lower intake manifold. Refer to Lower Intake Manifold Replacement .
2. Remove the exhaust crossover. Refer to Exhaust Crossover Pipe Replacement .
3. Remove the valve rocker arms and pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
4. Remove oil level indicator and tube. Refer to Oil Level Indicator and Tube Replacement .
5. Remove and discard the cylinder head bolts.
6. Remove the cylinder head and gasket. Discard the gasket.
7. Clean the mating surfaces of the following items:

• | The cylinder head

• | The cylinder block

• | The intake manifold

8. Clean the cylinder block bolt threads.
9. If replacing cylinder head, remove the following components:

• | Exhaust manifold

• | Refer to Exhaust Manifold Replacement - Left Side .

• | Engine lift bracket

• | Spark plugs

### Installation Procedure

1. If removed, Install the following components:

• | Exhaust manifold

• | Refer to Exhaust Manifold Replacement - Left Side .

• | Engine lift bracket

• | Spark plugs

2. Place the cylinder head gasket into position over the dowel pins. Ensure that the THIS SIDE UP note is showing.
3. Install the cylinder head.

Notice: Refer to Fastener Notice in the Preface section.

Notice: This component uses torque-to-yield bolts. When servicing this component do not reuse the bolts, New torque-to-yield bolts must be installed. Reusing used torque-to-yield bolts will not provide proper bolt torque and clamp load. Failure to install NEW torque-to-yield bolts may lead to engine damage.

4. Install the new cylinder head bolts.

Tighten

1. Tighten the cylinder head bolts a first pass to 60 N·m (44 lb ft).
2. Tighten the cylinder head bolts a final pass in sequence to 95 degrees using the J 45059 .

5. Install the intake gasket.
6. Install the push rods. Refer to Valve Rocker Arm and Push Rod Replacement .
7. Install the crossover pipe. Refer to Exhaust Crossover Pipe Replacement .
8. Install the upper and lower intake manifolds. Refer to Lower Intake Manifold Replacement or Upper Intake Manifold Replacement .
9. Connect the negative battery cable.
10. Install oil level indicator tube and indicator. Refer to Oil Level Indicator and Tube Replacement .
11. Fill the cooling system. Refer to Cooling System Draining and Filling .