Grand Cherokee 2WD L6-4.0L VIN S (1997)
Spark Plug: Adjustments
PLUG GAP ADJUSTMENT
Fig. 26 Gapping Spark Plugs - Typical
Check the spark plug gap with a gap gauge tool. If the gap is not correct, adjust it by bending the ground electrode (Fig. 26). Never attempt to
adjust the gap by bending the center electrode.
Spark Plug Gap - 0.89 mm (.035 in).
