13 51 630 Replacing fuel pressure regulator (M62)

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CAUTION: The fuel in the fuel lines is under pressure (approx. 3 to 5 bar)! Catch and dispose of escaping fuel.
Follow instructions for checking fuel pressure, refer to NOTES ON FUEL PRESSURE CHECK (REFERENCE PRESSURE: ENVIRONMENT) and NOTES ON FUEL PRESSURE CHECK (REFERENCE PRESSURE: INTAKE MANIFOLD PRESSURE) .

NOTE: Depending on the model series (E38, E39), national version and production period, there are 3 possible installation locations for the fuel pressure regulator:

in injection pipe, rear
in 3/2-way valve
in fuel filter

The different installation locations are described below.

Fuel pressure regulator version 1:

NOTE: There are 2 acoustic cover versions:

acoustic cover screwed down,
acoustic cover with press-stud fasteners.

Acoustic cover screwed down.

Remove seal caps (1).

Unscrew nuts (2).

Remove acoustic cover.

Fig 1: Removing Acoustic Cover

G03153031

Courtesy of BMW OF NORTH AMERICA, INC.

Acoustic cover with press-stud fasteners.

Press press-stud fasteners (1.. 4) in succession and at same time raise acoustic cover slightly. Remove acoustic cover when all four press-stud fasteners have been unlocked.

Installation

Position acoustic cover and press downwards until press-studs fasteners (1.. 4) click into place.

Fig 2: Identifying Press-Stud Fasteners On Acoustic Cover

G03153032

Courtesy of BMW OF NORTH AMERICA, INC.

Installation location of fuel pressure regulator:

On the rear suction unit beside the electronics box.

Fig 3: Installing Location Of Fuel Pressure Regulator

G03153033

Courtesy of BMW OF NORTH AMERICA, INC.

Fuel pressure regulator shown here on removed engine.

Remove vacuum hose.

Fig 4: Removing Vacuum Hose

G03153034

Courtesy of BMW OF NORTH AMERICA, INC.

Remove circlip.

Fig 5: Removing Circlip

G03153035

Courtesy of BMW OF NORTH AMERICA, INC.

Note position of vacuum connection.

Turn fuel pressure regulator and pull out.

Installation

Replace sealing rings (1 and 2).

Ensure sealing faces are clean.

Fig 6: Replacing Sealing Rings

G03153036

Courtesy of BMW OF NORTH AMERICA, INC.

Installation

Allow lug on circlip to engage in recesses in injector tube.

Fig 7: Identifying Circlip Engagement In Recesses In Injector Tube

G03153037

Courtesy of BMW OF NORTH AMERICA, INC.

Versions 2 and 3 of fuel pressure regulator:

E38: Front underbody cover on right side.

Release screws and clips.

Remove cover (1).

Fig 8: Identifying Front Underbody Cover

G03153038

Courtesy of BMW OF NORTH AMERICA, INC.

E39: Front underbody cover on left side.

Release screws (1).

Press cover (2) on underbody towards bottom.

Fig 9: Identifying Underbody Releasing Screws

G03153039

Courtesy of BMW OF NORTH AMERICA, INC.

Fuel pressure regulator version 2:

Fuel pressure regulator is integrated in 3/2-way valve.

Pull off vacuum hose (1).

Pull out locking bracket (2) in direction of arrow.

Remove fuel pressure regulator (3).

Fig 10: Pulling Out Locking Bracket (Regulator Version 2)

G03153040

Courtesy of BMW OF NORTH AMERICA, INC.

Fuel pressure regulator version 3:

Fuel pressure regulator is integrated in fuel filter.

Remove vacuum hose.

Pull out locking bracket (1) in direction of arrow.

Remove fuel pressure regulator (2).

Fig 11: Pulling Out Locking Bracket (Regulator Version 3)

G03153041

Courtesy of BMW OF NORTH AMERICA, INC.

Installation

Replace O-rings on fuel pressure regulator (1).
To aid installation, apply a thin coat of petroleum jelly to O-rings (1).

Fig 12: Identifying O-Rings On Fuel Pressure Regulator

G03153042

Courtesy of BMW OF NORTH AMERICA, INC.