Download 2005 Ford Truck F 150 2WD Pickup V8-5.4L SOHC VIN 5 Vehicle Level Engine, Cooling and Exhaust Engine Technical Service Bulletins All Technical Service Bulletins Ignition System, Spark Plug Removal Instructions. FORD: 2005-2008 Mustang 2004-2008 F-150 2005-2008 Expedition, F-Super Duty 2006-2008 Explorer, F-53 Motorhome Chassis 2007-2008 Explorer Sport Trac LINCOLN: 2005-2008 Navigator 2006-2008 Mark LT MERCURY: 2006-2008 Mountaineer This article supersedes TSB 08-1-9 to update Vehicle Applications, Service Procedure and Part List. ISSUE Some 2004-2008 F-150, 2006-2008 Mark LT, 2005-2008 F-Super Duty, Expedition, and Navigator, with 5.4L 3-V engine; 2005-2008 Mustang, 2006-2008 Explorer, Mountaineer, and 2007-2008 Explorer Sport Trac with 4.6L 3-V engine; 2005-2008 F-Super Duty, 2006-2008 and F-Stripped Chassis, with 6.8L 3-V engine may experience difficulty with spark plug removal. This may cause damage to the spark plug and leave part of the spark plug in the cylinder head. Affected engine build dates are as follows: 5.4L 3-V and 6.8L 3-V before 10/9/07, 4.6L 3-V before 11/30/07. ACTION Refer to the following Service Procedure for techniques to remove the spark plugs and extract broken spark plugs. SERVICE PROCEDURE The engine build date can be read on the left hand cam cover information sticker. To remove spark plugs without damage, it is necessary to adhere exactly to this procedure before removal is attempted. CAUTION DO NOT REMOVE PLUGS WHEN THE ENGINE IS WARM OR HOT. THE ENGINE MUST BE AT ROOM TEMPERATURE WHEN PERFORMING SPARK PLUG SERVICE. REMOVING THE SPARK PLUGS FROM A WARM/HOT ENGINE INCREASES THE CHANCE THE THREADS COULD BE DAMAGED. Spark Plug Removal Procedure NOTE COMPLETELY REVIEW THE PRODUCT LABEL FOR THE MOTORCRAFT CARBURETOR TUNE-UP CLEANER PRODUCT – USE AT ROOM TEMPERATURE AND SHAKE WELL. CAUTION EXCESSIVE MOTORCRAFT(R) CARBURETOR TUNE-UP CLEANER, OR REPEATING THE PROCESS SEVERAL TIMES WITH TOO MUCH CLEANER FLUID, COULD INTRODUCE ENOUGH LIQUID VOLUME TO HYDRO-LOCK THE ENGINE. CAUTION DO NOT USE AIR OR POWER TOOLS FOR SPARK PLUG REMOVAL. SPARK PLUGS MUST ONLY BE REMOVED WITH HAND TOOLS. 1. Remove the coil-on-plug assemblies and thoroughly blow out the spark plug wells and surrounding valve cover area with compressed air. 2. Back out the spark plugs no more than 1/8 to 1/4 of a turn. Using Motorcraft(R) Carburetor Tune-Up Cleaner, fill the spark plug well just above where the jamb nut hex sits (1/2 – 3/4 teaspoon). A minimum period of 15 minutes of soak time is required. The cleaner will wick down to the ground electrode shield and soften the carbon deposits in this time. DO NOT WORK the spark plug back and forth at this point.
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