Fuel supply to engine
WARNING: This page is about a different car, the 2003 BMW Z8, 2002 BMW Z8, 2001 BMW Z8, and 2000 BMW Z8. However, it is still accessible from the selected car via links, so may be relevant.
Pressure regulator and fuel filter are incorporated in a single unit.
The fuel is routed from the electric fuel supply pump via the fuel feed line and the fuel filter/pressure regulator unit to the fuel rail.
The fuel rail is return-free. The fuel flows directly from the fuel filter/pressure regulator unit back into the fuel tank.