The inspection confirms that the main cause of the engine failure is the timing chain issue, which resulted in damage to the VVT unit, cylinder head and camshafts. Additional issues have also been identified with the turbocharger and carbon contamination within the EGR system.
The required repair work includes:
Engine reconditioning and refitting
Turbocharger replacement
DPF and catalytic converter cleaning
EGR system cleaning and replacement of the EGR cooler mesh filter
Complete service, including fluids and filters
Thermostat housing replacement
Piston cooling solenoid replacement
Further testing will be carried out after the repair to check the condition and operation of the DPF, EGR system and exhaust sensors before the vehicle is returned to the customer.