Contents: Removal water 🠛 Removal air 🠛
Fig. 3.1. Fine fuel filter: 1 - fuel supply pipeline; 2 - fuel booster pump; 3 - air bleed bolt; 4 - fuel return pipeline; 5 - water drain bolt; 6 - fuel fine filter housing; 7 - Electric heater connector; 8 - temperature sensor
Fig. 3.2. Elements of the fuel system: A - engine C8T 714; B - engine C8T 716; 1 - high pressure fuel pump; 2 - high pressure pipelines; 3 - fuel return pipeline; 4 - nozzle body; 5 - injector needle; 6 - injector needle socket; 7 - adjusting gasket; 8 - spring; 9 - spring socket; 10 - spacer; 11 - lower body of the injector; 12 - Flameproof washer; 13 - sealing ring; 14-distance gasket; 15 - vacuum regulator of fast idle speed; 16 - load potentiometer; 17 - electromagnetic blocking valve module
Removal water
- Loosen the water drain bolt located under the fuel filter.
- Loosen the air bleed screw and wait until the water and impurities are drained from the filter
- Tighten the water drain bolt and bleed air from the fuel system.
Removal air
Removing air from the fuel system is necessary in the following cases:
- disconnecting fuel pipes;
- air entering the high pressure fuel pump supply system;
- after the fuel tank has been completely depleted or after replacing the fuel filter element.
- To remove air, loosen the air bleed bolt located on the filter bracket and run the fuel pump until fuel without air bubbles comes out from under the bolt, then tighten the bolt.
- Tighten the air bleed bolt
- Continue pumping fuel until you feel a noticeable resistance.
- If the engine does not start, repeat the air bleeding operation.