There have been some complaints of a ticking noise in the
left bank cylinder head engine area in certain late model Ford Duratec engines. Refer your engine installer to the following service
procedure to identify and resolve the issue.
Engines affected: 2005-’08 Ford 3.0L 4V Duratec engine with exhaust camshaft-driven water pumps.
diagnose, with the engine running and warm (normal operation
temperature), use a mechanic’s stethoscope to determine if the ticking
noise is coming from the left-hand exhaust camshaft at cylinder #6 (see
Figure 1). If the ticking noise can be verified, refer to the following
For 2008 Escape and Mariner applications, check the date on
the left-hand cam cover engine label. If the engine build date is
5/16/20007 or before, refer to the following to identify and resolve
the engine ticking noise. For engines built after this date, this
procedure does not apply; refer the Workshop Manual (WSM), Section
For 2007 Fusion and Milan applications, check the date on the front
cover label. If the engine build date is 5/9/2007 or before, refer to
the following to identify and resolve the engine ticking noise. For
engines built after this date, this procedure does not apply; refer the
WSM, Section 303-00.
1. Remove the left-hand camshaft cover. Refer to WSM, Section 303-01 of the appropriate manual.
2. Rotate the engine clockwise until the cylinder #6 exhaust cam lobes are pointing up and the valves are fully closed.
3. Remove all left-hand exhaust cam caps individually and reinstall them finger tight.
4. Torque bolts in sequence as shown in Figure 2, to 72 lbs.-in. (8 Nm) excluding cam cap #4L camshaft cap.
Using a screwdriver positioned on each side of the top of cam cap #4L
(see Figure 3), apply hand pressure and shift cam cap #4L toward the
exhaust side of the cylinder head.
While holding cam cap #4L in the shifted position, torque fastener #9
(inboard) first, to 72 lbs.-in. (8 Nm), then torque fastener #10
7. Install the left-hand camshaft cover. Refer to the appropriate WSM, Section 303-01.
8. Fully warm the engine to verify the repair.
Technical service bulletin courtesy of Mitchell 1.
For more information on Mitchell 1 products and services, automotive professionals can log onto the company’s website at www.mitchell1.com.