For 1990-2009 cars

1. Clean the valve lifters in cleaning solvent.

Caution: Wear safety glasses in order to avoid eye damage.

2. Dry the valve lifters using compressed air.
3. Inspect the valve lifters for the following conditions:

• | A bent or broken clip (1)

• | A worn push rod socket (2)

• | Scuffed or worn sides (3)

• | If the valve lifter shows wear, inspect the engine block lifter bores for wear or damage.

• | Flat spots on the roller (4)

• | A loose or damaged pin (5)

• | A plugged oil hole (6)

• | Worn or damaged roller bearing

• | The roller should rotate freely with no binding or roughness.

4. Inspect the valve lifter guides for the following conditions:

• | Cracks or damage

• | Excessive wear in the lifter mounting bores