2000 — 2004
4.2L I4 (OM904LA)
Diesel
Check cold start performance | Note: The OM904LA engine can suffer from fuel injector seepage or air leaks in the fuel line, causing hard starts.
Inspect AdBlue/SCR system status | Note: Look for warning lights on the dash; pump and NOx sensor failures are common and expensive to rectify.
Test gearbox synchronizers | Note: Listen for grinding in lower gears; worn synchros are a sign of heavy commercial abuse.
Examine the chassis for corrosion | Note: Being a heavy vehicle often exposed to NZ coastal salt, check cross-members and brake lines for excessive rust.
Initial oil and filter service, including thorough chassis lubrication and air dryer cartridge replacement.
Major service including valve clearance adjustment and inspection of the turbocharger hoses for oil weeping.
Comprehensive drivetrain service, including gearbox and differential oil change, and full brake system inspection.
Regularly drain the air system tanks to prevent moisture buildup and pneumatic valve corrosion.
Monitor the engine cooling system for signs of head gasket weeping or hose fatigue.
Perform bi-annual chassis cleaning and protective coating application to combat NZ road salt.
Verify the condition of the cab suspension bushings for excess play or knocking.
Check wheel bearing end-play and ensure wheel nut torque is set to factory specifications.
Estimated repair costs if issues arise
Prepare for high-pressure pump issues if the vehicle has been operated on poor quality diesel.
Standard heavy-duty clutch kit replacement including labour for the OM904LA configuration.
Commercial brake components for the Atego range; prices vary by axle configuration.
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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