2004 — 2013
6.4L I6 (OM906LA)
Diesel
Check cold-start performance | Note: The OM906LA engine is robust, but early morning hard starting often indicates faulty glow plugs or worn high-pressure fuel pump seals.
Test exhaust brake and engine retardation | Note: Ensure the exhaust flap valve is not sticking; a seized actuator will cause excessive smoke and loss of braking performance.
Inspect AdBlue/SCR system lights | Note: Look for limp-mode triggers related to the NOx sensors or the AdBlue dosing pump, as these are common failure points in NZ's varied terrain.
Verify air suspension leak-down | Note: Park the truck on level ground and check for uneven sinking or compressor cycling, which indicates aging airbags or air leaks in the leveling valves.
Standard oil and filter service; perform a chassis grease cycle and inspect brake lining thickness.
Major service including transmission oil change, differential oil service, and replacement of all air dryer desiccant cartridges.
Deep inspection of fuel injectors, valve clearance adjustment, and comprehensive check of the cooling system hoses and water pump integrity.
Verify AdBlue fluid quality and clean the dosing nozzle filter.
Inspect the turbocharger manifold for exhaust gas leaks or warping.
Monitor the engine oil for fuel dilution, common in short-haul urban cycles.
Check all electrical harness connections for corrosion, especially near the wheel arches.
Test the cabin air filtration system to prevent HVAC blower motor seizing.
Estimated repair costs if issues arise
Preventative maintenance is cheaper than replacing a damaged piston caused by a faulty injector.
Components are sensitive to contamination; use only OEM-grade fluid and filters.
Always replace in pairs across the same axle to ensure even leveling.
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Disclaimer: This report is generated with the assistance of AI analysis based on verified automotive data. While we strive for 100% accuracy, enthusiasts should always conduct physical inspections and consult service records. View Full Disclaimer