5.0L ENGINE - METALLIC RATTLE OR SCRATCHING TYPE NOISE FROM FRONT OF LEFT HAND CYLINDER HEAD AT IDLE - BUILT ON OR BEFORE 3/31/2011
Publication Date: September 27, 2011
2011 Mustang 2012 Mustang 2011 F-150
Some 2011 F-150 and 2011-2012 Mustang vehicles (excluding Boss) built on or before 3/31/2011 and equipped with a 5.0L engine may exhibit an intermittent metallic rattle or scratching type noise in the area at the front of the left hand (driver side) cylinder head at idle with the engine at operating temperature.
Follow the Service Procedure steps to correct the condition.
NOISE IS NOT A TYPICAL UPPER ENGINE TICK OR TAPPING NOISE.
With the vehicle in park, start the engine and operate at idle allowing the engine to warm to normal operating temperature.
Using a mechanic's stethoscope or EngineEAR, evaluate area at front of left hand (driver side) cylinder head for metallic rattle or scratching type noise. Stethoscope or EngineEAR probe should be placed in the areas shown. (Figures 1 and 2)
Is the noise heard in the areas shown? (Figures 1 and 2)
Figure 1 - Article 11-9-15
Figure 2 - Article 11-9-15
(Place stethoscope on cylinder head oil galley.)
Yes - Replace the left hand primary tensioner and the left hand timing chain tensioner arm using the kit part number provided in this article. Refer to Workshop Manual (WSM), Section 303-01C, Camshaft-Left Hand , for removal and installation procedure.
No - Do not continue with this article. Perform normal diagnostics. Refer to WSM, Section 303-00.
FAILURE TO REPLACE BOTH THE PRIMARY TENSIONER AND TIMING CHAIN TENSIONER ARM MAY RESULT IN OVERLOADING OF THE TIMING CHAIN AND UNDER CERTAIN CONDITIONS COULD LEAD TO TIMING CHAIN FAILURE.
Chain Tensioner Kit
Motorcraft® Silicone Gasket Remover
Motorcraft® Metal Surface Prep
Motorcraft® Silicone Gasket and Sealant
Water Pump Gasket
Front Cover Gasket Left
Front Cover Gasket Center
Front Cover Gasket Right
Left Hand Valve Cover Gasket
Right Hand Valve Cover Gasket
A/C Stretchy Belt
Eligible Under Provisions Of New Vehicle Limited Warranty Coverage IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
2011 F-150 5.0L: Replace The Left Hand Timing Chain Tensioner And Tensioner Arm Includes Time To Diagnose (Do Not Use With Any Other Labor Operations)
2011-2012 Mustang 5.0L: Replace The Left Hand Timing Chain Tensioner And Tensioner Arm Includes Time To Diagnose (Do Not Use With Any Other Labor Operations)