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2. Fuel Supply System E46: Notes

2.1 Description Of Parts 

FUEL SUPPLY SYSTEM E46 DESCRIPTION

1. Fuel tank (plastic) 18. Rollover valve
2. Electric fuel delivery pump 19. Float valve (USA only)
3. Surge chamber 20. Fuel filter
4. Pressure relief valve 21. Pressure regulator
5. Overflow protection valve 22. 3/2-way valve (M52 USA only, M73)
6. Suction jet pump 23. Fuel rail
7. Tank expansion line 24. Engine control unit
8. Non-return flap 25. Intake manifold
9. Filler neck 26. Fuel evaporation control valve
10. Fuel filler cap 27. Flush line
11. Refuelling vent line (all countries) 29. Vacuum line (leak diagnosis pump USA only)
12. Fuel feed line 30. Breather pipe
13. Fuel return line 31. Activated carbon filter
14. Operating vent line 32. Activated carbon filter (USA only)
15. Refuelling vent line (USA only) 33. Leak diagnosis pump (USA only)
15. Auxiliary vent line (Japan) 34. Dust filter (USA only)
16. Operating vent line 35. Tank leak diagnosis module (USA only)
17. Expansion tank