For 1990-2009 cars

### Removal Procedure

1. Remove the engine cover. Refer to Engine Cover Replacement .
2. Remove the spark plug wires. Refer to Spark Plug Wire Replacement .
3. Loosen each spark plug 1 or 2 turns.
4. Use a brush, or use compressed air in order to remove any dirt from the spark plugs.
5. Remove the spark plugs one at a time and place each plug in a tray marked with the corresponding cylinder numbers.

### Installation Procedure

1. Inspect each spark plug gap. Adjust each plug as needed.

Specification
Spark plug gap: 1.524 mm (0.060 in).

Notice: Refer to Fastener Notice in the Preface section.

2. Hand start the spark plugs in the corresponding cylinders.
3. Tighten the spark plugs.

Tighten

• | Tighten the engine spark plug on a NEW cylinder head to 20 N·m (15 lb ft).

• | Tighten the engine spark plug on subsequent installations to 15 N·m (11 lb ft).

4. Install the spark plug wires. Refer to Spark Plug Wire Replacement .
5. Install the engine cover. Refer to Engine Cover Replacement .