The Ford Ranger T6, introduced in 2011 and continuing through the 2015 model year, uses a timing chain (not a belt) for valve timing control in both the 2.2L and 3.2L Duratorq TDCi diesel engines. While generally more durable than belts, timing chains in these models have been known to suffer from premature wear, stretching, and tensioner failures — particularly in high-mileage or poorly maintained units.
Function of the Timing Chain
The timing chain synchronizes the rotation of the crankshaft and camshafts, ensuring precise valve opening and closing. A properly functioning chain is critical for combustion timing, engine performance, and longevity.
Common Timing Chain Problems
Affected Engines
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2.2L Duratorq TDCi (Puma engine)
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3.2L Duratorq TDCi (P5AT engine)
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Most reported issues appear after 100,000–180,000 km, though premature wear has been seen in vehicles with poor oil maintenance or heavy-duty use.
Symptoms of a Failing Timing Chain
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Metallic rattling noise (especially at cold start or idle)
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Check Engine Light (typically with camshaft/crankshaft correlation codes)
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Rough idle or delayed engine response
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Reduced power or fuel economy
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In extreme cases: engine misfire or failure to start
Diagnostic Methods
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Mechanical Sound Test: Listen for rattling or chain slap noise from the timing cover area.
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OBD-II Scan: Check for timing-related codes like P0016 (Crankshaft-Camshaft correlation).
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Timing Inspection: With the valve cover removed, physical play or slack in the chain can be checked.
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Oil Analysis: Contaminants from chain or guide wear may appear in oil.
Repairs and Solutions
Prevention Tips
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Use high-quality engine oil (5W-30 or 5W-40 fully synthetic)
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Change oil every 8,000–10,000 km, especially in hot climates or heavy use
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Avoid long idle periods and cold-start revving
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Listen for early warning sounds and don’t ignore cold-start rattles
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Inspect the timing chain system at 100,000 km onward
