Vehicles affected: 2005-’07 Five Hundred, Freestyle Montego, 2006-’07 Fusion and Milan, 2006 Zephyr, and 2006-’08 Escape and Mariner vehicles built 1/17/2006 through 5/31/2007, equipped with the 3.0L 4V Duratec engine with exhaust camshaft-driven water pumps.

If a customer brings in his vehicle with a ticking noise in the left bank cylinder head engine area, refer to the following service procedure to identify and resolve the issue.

Service Procedure
To 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 instructions.

For 2008 Escape and Mariner, 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...