Fulltext TSBs

Technical Service Bulletins

TSB
07-21-2
  • 4.6L 2V, 5.4L 2V, OR 6.8L 2V – SPARK PLUG THREAD REPAIR PROCEDURE – NOT COVERED UNDER NEW VEHICLE LIMITED WARRANTY
Publication Date: October 17, 2007

FORD:
1997 Thunderbird
1997-2004 Mustang
1997-2008 Crown Victoria
1997-1999 F-250 Light Duty
1997-2004 Expedition
1997-2008 E-Series, F-150
1998-2004 F-53 Motorhome Chassis, F-Super Duty
2001-2005 Excursion
2002-2006 Explorer
LINCOLN:
1997-2007 Town Car
1998-1999 Navigator
MERCURY:
1997 Cougar
1997-2008 Grand Marquis
2002-2006 Mountaineer

This article supersedes TSB 07-15-2 to update the vehicle model years.

ISSUE:

Some 1997-2008 vehicles equipped with a 4.6L 2V, 5.4L 2V, or 6.8L 2V engine and aluminum cylinder heads may experience a spark plug port with stripped or missing threads.

ACTION:

Follow the Service Procedure steps to correct the condition for non warrantable repairs.

SERVICE PROCEDURE

Ford Motor Company now authorizes LOCK-N-STITCH aluminum insert and tool kit as a proper repair procedure.

Follow the procedure included in the tool kit for using the tools and inserts. Tool kits and inserts can be ordered from Rotunda by calling 1-800-Rotunda (768-8632). Choose option two (2), part number 302-00001.

NOTE:FORD MOTOR COMPANY HAS DETERMINED THAT REPAIRS MADE WITH THESE ALUMINUM INSERTS AND LOCK-N-STITCH TOOLS DO NOT AFFECT THE HEAT TRANSFER FUNCTION BETWEEN THE SPARK PLUG AND THE CYLINDER HEAD.

NOTE:THIS PROCEDURE IS NOT AUTHORIZED AS A FORD WARRANTY REPAIR. FOR VEHICLES WITHIN WARRANTY, REPLACEMENT OF THE CYLINDER HEAD IS RECOMMENDED.

NOTE:THIS IS THE ONLY FORD AUTHORIZED PROCEDURE FOR SPARK PLUG THREAD REPAIRS.

NOTE:THIS PROCEDURE IS AUTHORIZED FOR ESP REPAIRS AND RETAIL REPAIRS.

WARRANTY STATUS:

Information Only – Not Warrantable