Date of issue 03/05 Bulletin Number 303-68 Page 1 of 2
Start-up and Idle Rattle –
Primary Or Secondary Chain Tensioner –
1997-2002 MY- XK Range
1998-2002 MY V8 XJ Series
V8 XJ Series/XK
NOTE: THE INFORMATION IN TECHNICAL BULLETINS IS INTENDED FOR USE BY TRAINED, PROFESSIONAL TECHNI-
CIANS WITH THE KNOWLEDGE, TOOLS, AND EQUIPMENT TO DO THE JOB PROPERLY AND SAFELY. IT INFORMS
THESE TECHNICIANS OF CONDITIONS THAT MAY OCCUR ON SOME VEHICLES, OR PROVIDES INFORMATION THAT
COULD ASSIST IN PROPER VEHICLE SERVICE. THE PROCEDURES SHOULD NOT BE PERFORMED BY “DO-IT-
YOURSELFERS.” DO NOT ASSUME THAT A CONDITION DESCRIBED AFFECTS YOUR CAR. CONTACT A JAGUAR
DEALER TO DETERMINE WHETHER THE BULLETIN APPLIES TO YOUR VEHICLE.
Some vehicles within the above VIN ranges may exhibit a rattle emanating from the
engine on start-up and idle.
Failure of a primary or secondary timing chain tensioner.
Note: Any faults other than timing chain tensioners are to be carried
out as a separate Warranty Claim.
In case of a verified customer complaint, and the fault has been confirmed as a timing
chain tensioner, install new primary or secondary timing chain tensioners as outlined
Note: If there is a fault with a primary tensioner, all primary and
secondary tensioners must be replaced. If there is a fault with a
secondary tensioner, then both secondary tensioners must be
Note: When installing the new secondary tensioner, the new modified
(shorter) bolts must be installed.
Note: Where possible, carry out a visual inspection of the timing
chain, if damaged, replace the timing chain.
To install primary or secondary timing chain tensioner, see Global Technical Reference
GTR Workshop Manual, (for all VIN ranges use 1999 MY) section 303-01.