Fuel System - Volvo Penta D4 Operator's Manual

Fuel system

The engine fuel system is a so-called common rail-system. The advantage of the common rail-system is that the
engine control unit controls the timing and fuel amount, this mean better emission control and a smooth running
engine.
All work on the engine common rail-system must be carried out at an authorized workshop. Use only the recom-
mended grade of fuel: See the chapter "Technical Data".
WARNING! Fire risk. When carrying out work on the fuel system makes sure the engine is cold. A fuel spill
onto a hot surface or an electrical component can cause a fire. Store fuel soaked rags so that they cannot
cause a fire.
Change the fuel filter
1. Close the fuel valve/valves.
2. Clean the filter bracket and put a suitable vessel
under the filter.
3. Remove the cables from the water trap (1).
4. Unscrew the filter, use a filter wrench if needed..
5. Clean the sealing surfaces of the filter bracket.
Make sure the filter is absolutely clean and the
sealing surfaces are undamaged. Moisten the se-
aling rings with engine oil, including the inner rub-
ber seal located inside the threaded hole in the
center of the filter.
NOTE! Do not fill the new filter with fuel before as-
sembly. Contaminations may get into the system
and cause damage and malfunction.
6. Screw the new filter on by hand until the seal just
touches the mating surface. Then tighten a further
1/2 turn. Reinstall the water trap cables.
7. Open the fuel valve.
8. Bleed the fuel system. See Chapter "Bleeding the
fuel system".
9. Start the engine and check for leakages.
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