Removal & Installation (6-Cylinder - E46)
WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 1999 BMW Z3, 1999 BMW M3, 1999 BMW M Roadster, 1999 BMW M Coupe, and 1999 BMW 740iL. However, it is still accessible from the selected car via links, so may be relevant.
Fuel pressure regulator is located on fuel rail. Open wire conduit on lower section of microfilter housing on cowl. Carefully feed wiring out of conduit. Remove 4 screws from microfilter housing. Remove lower section of microfilter housing. See Fig 1. Remove engine cover. Disconnect vacuum hose from fuel pressure regulator. Note position of vacuum connector on fuel pressure regulator. Remove circlip. Remove fuel pressure regulator. To install, reverse removal procedure. Ensure lug on circlip engages in slot on injector fuel rail.