Dakota 2WD V6-3.9L VIN X (1997)
Spark Plug: Service and Repair
Fig. 31 Heat Shields
Spark plug cable heat shields are pressed into the cylinder head to surround each cable boot and spark plug.
If removal of the heat shield(s) is necessary, remove the spark plug cable and compress the sides of shield for removal. Each shield is slotted to allow for
compression and removal. To install the shields, align shield to machined opening in cylinder head and tap into place with a block of wood.
Fig. 11 Cable Removal
PLUG REMOVAL
1. Always remove spark plug or ignition coil cables by grasping at the cable boot. Turn the cable boot 1/2 turn and pull straight back in a steady
motion. Never pull directly on the cable. Internal damage to cable will result.
2. Prior to removing the spark plug, spray compressed air around the spark plug hole and the area around the spark plug. This will help prevent
foreign material from entering the combustion chamber.
3. Remove the spark plug using a quality socket with a rubber or foam insert.
4. Inspect the spark plug condition.
PLUG CLEANING
The plugs may be cleaned using commercially available spark plug cleaning equipment. After cleaning, file the center electrode flat with a small
point file or jewelers file before adjusting gap.
CAUTION: Never use a motorized wire wheel brush to clean the spark plugs. Metallic deposits will remain on the spark plug insulator and will
cause plug misfire.
