Models with M52 engine
Depending on the version of the vehicle, the fuel pressure regulator can be installed in one of three places: on the outlet of the distribution line, on its rear part, or on the bottom of the vehicle.
Version 1
1. Remove the outlet of the distribution line with injectors (see Section Removal and installation of the fuel distributive highway and injectors).
2. For removal of a regulator of pressure of fuel on a distributive highway disconnect a vacuum hose and remove a lock ring.
3. Keeping an eye on the position of the vacuum hose connection, twist the pressure regulator out.
Replace O-rings when installing (1 and 2). Make sure that the sealing surfaces are not contaminated.
Pressure Regulator O-Rings
4. Installation is carried out in the reverse order. Make sure that the lug on the circlip engages in the grooves on the camshaft outlet.
Execution 2
1. To remove the fuel pressure regulator on the bottom of the car, unscrew the bolts and remove the cover.
2. Disconnect the vacuum hose (1), remove the fixing bracket (2) and a fuel pressure regulator.
Version 3
1. Remove the outlet of the distribution line with injectors (see Section Removal and installation of the fuel distributive highway and injectors).
The fuel pressure regulator is located at the rear of the fuel rail.
Fuel pressure regulator location
2. Disconnect a vacuum hose and remove a fixing bracket.
3. Follow the steps described in the paragraphs 3 and 4.
Models with M52TU engine
1. Remove the cabin filter and open the one located on the bottom (2) its body cable channel. Pull the cables out. Remove the bolts (1) and remove the bottom (2) cabin filter housings.
2. Remove the bolt caps and turn them out. Remove the injector cap (see illustration).
3. Disconnect the vacuum hose (1) from the fuel pressure regulator.
4. Follow the steps described in the paragraphs 3 and 4.
Models with M60 engine
1. Remove the engine top cover.
The fuel pressure regulator is located on the rear side of the intake system, near the ECM compartment.
Fuel pressure regulator location
2. Disconnect the vacuum hose.
3. Remove retaining ring (see illustration).
4. Follow the steps described in the paragraphs 3 and 4.
Models with M62 engine
Depending on the version of the vehicle, the fuel pressure regulator can be installed in one of three places: in the outlet of the distribution line at the rear, in the two-position three-way valve, or in the fuel filter.
1. Replacing the fuel pressure regulator installed on the branch of the distribution line (performance 1) is performed in the same way as replacing the regulator on models with an M62 engine. The following describes the procedure for replacing the pressure regulator version 2 and 3.
2. Remove the front right underbody protection section.
3. Disconnect the vacuum hose (1), pull out the fixing bracket (2) in the direction of the arrow and remove the fuel pressure regulator (3).
4. Installation is carried out in the reverse order. Replace the fuel pressure regulator o-rings.
Models with M73 engine
Until 09.1998, issue.
1. Remove the engine top cover.
2. Disconnect the vacuum hose (1) and remove the snap ring.
3. Follow the steps described in the paragraphs 3 and 4.
Since 09.1998 issue.
1. Remove the front right underbody protection section.
2. Disconnect the vacuum hose (1), pull out the fixing bracket (2) and remove the fuel pressure regulator.
3. Installation is carried out in the reverse order. Replace the fuel pressure regulator o-rings.