Tech Tip: Ford Camshaft Tick Noise
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Tech Tip: Ford Camshaft Tick Noise

Some of the affected vehicles built Jan. 17, 2006 and later equipped with the 3.0L 4V Duratec engine with exhaust camshaft-driven water pumps may exhibit a ticking noise from the left bank cylinder head with the engine at normal operating temperature.

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figure 1Vehicles affected:
Ford: 2005-’07 Five-Hundred, Freestyle; 2006 Fusion; 2006-’07 Escape

Lincoln:
2006 Zephyr

Mercury:
2005-’07 Montego; 2006 Milan; 2006-’07 Mariner

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Some of the affected vehicles built Jan. 17, 2006 and later equipped with the 3.0L 4V Duratec engine with exhaust camshaft-driven water pumps may exhibit a ticking noise from the left bank cylinder head with the engine at normal operating temperature.

Service Procedure
To diagnose, with the engine running and warm (normal operation temperature), using a mechanic’s stethoscope determine if the ticking noise is coming from the left-hand exhaust camshaft at cylinder number 6, see Figure 1.

 

If the ticking noise can be verified, continue with the Service Procedure.

figure 21. Remove the left-hand camshaft cover.

2. Rotate the engine clockwise until the cylinder number 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 the sequence shown in Figure 2 to 72 lb.-in. (8 Nm) excluding cam cap number 4L.

See Figure 2

5. Using a screwdriver positioned on each side of the top of cam cap number 4L, apply hand pressure and shift cam cap number 4L toward the exhaust side of the cylinder head.

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See Figure 3

 

6. While holding cam cap number 4L in the shifted position, torque the fasteners number 9 (inboard) first, to 72 lb.-in. (8 Nm) then torque fastener number 10 (Figure 3).Figure 3

7. Install the left-hand camshaft cover.

8. Fully warm the engine to verify the repair.

Courtesy of Identifix.

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