Spark Plug: Service and Repair

Fig 25 Spark Plug Heat Shield:

Failure to route the cables properly could cause the radio to reproduce ignition noise, cross ignition of the spark plugs or short circuit the cables to ground.

Always remove the spark plug cable by grasping the top of the spark plug insulator, turning the boot 1/2 turn and pulling straight up in a steady motion.

REMOVAL
1. Remove the spark plug using a quality socket with a rubber or foam insert.
2. Inspect the spark plug condition. Testing and Inspection

INSTALLATION
1. To avoid cross threading, start the spark plug into the cylinder head by hand.
2. Tighten spark plugs to 28 Nm (20 ft. lbs.) torque.
3. Install spark plug insulators over spark plugs.