Fuel Injection System - Diesel: Operation: Notes

Fuel is pumped from fuel tank, through a pre-filter and main fuel filter into suction chamber of injection pump. Pump's camshaft operates injection pump plungers, which force fuel through delivery valves, reverse-flow dampening valves, and pressure lines to fuel injection nozzles.

The Electronic Control Unit regulates idle speed adjustment, Exhaust Gas Recirculation (EGR), recirculating air control and a complete system diagnosis.