Engine Fuel System The components of the fuel system are: Fuel tank Hand fuel pump Injection pump Injection nozzles In this section: Operation Fuel Line Routing Maintenance Fuel Return Line Replacement Bleeding the Fuel System Draining Water from Fuel Tank Fuel Filter/Water Separator Engine Speed Adjustments Injection Pump Timing Injection Pump Removal Injection Pump Reinstallation Fuel Solenoid Replacement Parent topic: Engine Maintenance