Removal and Installation

CAUTION: Note routing of secondary ignition cables before removing. Failure to route cables properly may result in radio interference, ignition cross fire, or ignition short to ground.

NOTE: Keep plugs in order removed. A plug, that looks different from the rest, could be a problem indicator.

REMOVAL
1. Spray compressed air around spark plug to prevent foreign material from entering combustion chamber.
2. Remove spark plug wire by grasping boot and turning 1/2 turn while pulling boot back in a steady motion.
3. Remove spark plug using socket with foam insert.

INSPECT FOR:
- Color of Deposits
- Excessive Deposits
- Electrode wear
- Cracked or Damaged Threads Or Insulator
- Worn or Bent Electrodes
- Damaged Gasket

INSTALLATION
1. Start plug in cylinder head by hand, to prevent cross threading.

CAUTION: Do not overtighten plugs, overtightening can distort plugs resulting in a changed gap.

2. Torque spark plugs to 20 ft-lbs (28 Nm).
3. Install secondary ignition cables on spark plugs, (be sure connectors are pushed onto plug completely).