Practical forms and calculators that run in your browser; no personal details are sent by these tools. These pages focus on the evidence and decisions relevant to worksheets & decision tools, with attention to safely identifying the actual cause before ordering expensive diesel injection components.
Explore this collection alongside the Technical Journal, the diesel code center and the nationwide mail-in service. The articles explain what to capture and when to involve a qualified specialist; they do not replace OEM diagnostic procedures.
Guides in this collection
Fleet Downtime Cost Calculator
Compare two repair options using your own real costs and days out of service.
Repair Estimate Comparison Worksheet
Compare complete component-service quotes, not just headline prices.
Component Intake Worksheet for Repair Shops
Organize part numbers, codes, symptoms and bench testing questions.
Injector and Pump Identification Worksheet
Capture permanent markings and engine information before requesting compatibility.
Fuel-System Failure Photo Checklist
Create a photo and sample evidence list without uploading private records.
How to use these guides
Begin with equipment identification and the exact symptom, then review related tests and technical limitations. Where an article calls for a high-pressure fuel-system test or physical inspection, employ trained personnel and current manufacturer information. DCT does not guarantee repair, pricing or turnaround for an unidentified component.