Expedition 4WD V8-5.4L VIN 5 (2006)
Lifter / Lash Adjuster: All Technical Service Bulletins
Engine - Loud Valve Train Ticking Noise
TSB 06-9-11
05/15/06
LOUD TICKING NOISE - 3-VALVE ENGINES - STUCK
LASH ADJUSTER
FORD:
2006 Mustang, Expedition, Explorer, F-150, F-250, F-350
LINCOLN:
2006 Mark LT, Navigator
MERCURY:
2006 Mountaineer
ISSUE
Some vehicles equipped with 4.6L, 5.4L, and 6.8L 3-valve engines built between 1/11/2006 and 2/14/2006 may exhibit a loud ticking noise in the valve
train area. This may be caused by a stuck/collapsed lash adjuster.
ACTION
Verify engine build date, isolate, and replace any stuck/collapsed lash adjuster by following the Service Procedure.
SERVICE PROCEDURE
1.
Check date code on the engine, located on the engine timing cover.
a.
Date code between 1/11/2006 and 2/14/2006, proceed to Step 2.
b.
Date code NOT between 1/11/2006 and 2/14/2006, this TSB does not apply, perform normal diagnostics.
2.
Isolate the source of the noise to the cam cover on either Bank 1 or Bank 2. If the noise is not isolated to either cam cover, this TSB does not
apply. Follow normal Workshop Manual (WSM) procedures for additional diagnostics.
3.
Remove the appropriate cam cover.
4.
Check for stuck/collapsed lash adjuster(s) by placing the cam lobe on the base circle and inspecting for loose cam followers as a result of the lash
adjuster plunger being bottomed out.
NOTE
A COLLAPSED LASH ADJUSTER WILL RESULT IN EXCESSIVE CLEARANCE BETWEEN THE LASH ADJUSTER AND THE CAM
FOLLOWER.
NOTE
WHEN CHECKING "3V" LASH ADJUSTERS - A "SPONGY" LASH ADJUSTER IS NORMAL WHEN OIL PRESSURE IS "NOT" APPLIED.
5.
Replace only the affected lash adjuster(s) on the affected bank(s) following the procedures outlined in the appropriate WSM, Section 303.
Parts Block
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
OPERATION
DESCRIPTION
TIME
060911A
2006 Expedition/Navigator
4.6 Hrs.
5.4L 3V: Isolate And
Replace Lash Adjuster(s)
Right Side Of Engine (Do
