Cutlass V6-191 3.1L VIN M SFI (1998)
Spark Plug: Service and Repair
REMOVAL PROCEDURE
1. Turn the ignition key OFF.
2. Remove foreign material from around the spark plug holes.
3. Remove the spark plug using a spark plug socket.
INSTALLATION PROCEDURE
1. Adjust the spark plug gap. Use a round wire type spark plug gap gauge. While gapping the plug be sure to keep the platinum pads aligned to
ensure maximum plug life.
2. Install new plugs and tighten properly.
3. Reapply dielectric lubricant to the insulator boot.
Tighten
Tighten to 19 N.m (14 lb ft).