Spark Plugs - Poor Idle Quality/Gap Revision
303-29DATE
9/98
V8 XJ Series/XK8
MODEL
1997 MY-ON XK8 Range
1998 MY-ON V8 XJ Series
VIN
001001-ON
812256-ON
Idle Quality - Spark Plugs - Revised Gaps
Issue:
The specification for spark plug gaps on all V8 engines has been revised to improve engine idling quality.
Action:
When installing a set of spark plugs check, and if necessary, reset the gaps to 1.3 mm (0.052 inch) before installation.
This policy applies only when a set of spark plugs is replaced at a routine service interval, or as the result of a customer complaint. Do not remove or replace existing spark plugs just to increase the gap.
SERVICE INTERVAL - V8 ENGINES
Normally aspirated 100,000 miles
Supercharged 60,000 miles
Warranty Information:
This Technical Bulletin is issued for information only.