Fuel Pressure Regulator: Service and Repair

Fuel Pressure Regulator

WARNING
Work involving removal of the fuel pressure regulator involves interference with the car fuel system. The following points should therefore be observed in
connection with the procedure:
- Ensure good ventilation. If there is approved ventilation for extraction of fuel fumes then this must be used.
- Wear protective gloves. Prolonged exposure of the hands to fuel can cause irritation of the skin.
- Have a fire extinguisher class BE at hand. Be aware of the risk for sparks, i.e. in connection with circuit breaking, short-circuiting, etc.
- Absolutely No Smoking.
- Wear protective glasses.

IMPORTANT: Be particulary observant regarding cleanliness when working on the fuel system. Loss of function may occur due to very small particles. Prevent dirt and grime from entering the fuel system by cleaning the connections and plugging pipes and lines during disassembly. Use 82 92 948 Plugs, A/C system assembly. Keep components free from contaminants during storage.

To remove
1. Reduce the oil pressure by removing fuse 2 for the fuel pump while the engine is running (fuse 2 is located in the main fuse box in front of the battery). Once the engine has stopped, turn the ignition key to LOCK and refit the fuse.

2. Remove the upper engine cover.

3. Remove the cover over the ignition coils.
4. Remove the nuts on the cable duct.

5. Remove the vacuum hose.

6. Carefully move the coolant pipe to one side. Undo the fuel pressure regulator bolts, remove the front bolt and loosen the rear bolt about 5 mm.
7. Remove the fuel pressure regulator. Collect any fuel spill with a rag.

To fit
1. Fit the new O-rings to the fuel rail. Lubricate carefully with 30 15 286 Vaseline.

2. Fit a new regulator and tighten the bolts.
3. Connect the vacuum hose.
4. Fit the nuts on the cable duct.

5. Fit the cover over the ignition coils.

6. Connect an exhaust extractor, start the engine and check its operation. Check for leaks.
7. Replace the upper engine cover.