Diesel Injector Failure Analysis

I need a comprehensive technical review on a diesel engine fuel injector issue. The review should determine if the injector deterioration was progressive and likely present before complete failure. I will provide: - Service records and repair invoices - Fault-code scan reports and vehicle history report - Photos, parts inspection notes, or laboratory findings Ideal skills and experience: - Expertise in diesel engine mechanics, particularly fuel injectors - Strong analytical skills to interpret service records and fault codes - Ability to provide clear, technical written reports