DT466 Navistar Fuel System Diagram: Component & Repair Guide 2026
The Navistar DT466 fuel system diagram shows fuel flow from the tank, via the lift pump and filters, to the high-pressure fuel pump (HPFP). The HPFP, controlled by the injection pressure regulator (IPR), delivers fuel to injectors. Excess fuel returns through the fuel return line and fuel bowl. 📌 Key Takeaways DT466 fuel injection pressure…
