Checking and replacing the fuel pressure regulator

The health of the regulator is determined on a running engine by the fuel pressure in the injector rail (see «Checking the pressure in the power system»). If the pressure is below normal, and the rest of the system is working, the regulator is faulty. It needs to be replaced as it is not repairable.

1. Reduce the pressure in the supply system (see «Reducing the pressure in the power system»).

2. Disconnect the wire from the terminal «minus» battery.

3. Remove the fuel rail (see «Removal and installation of the fuel rail»).



4. Pry with a screwdriver..



5.... remove the latch..



6.... and remove the pressure regulator.



7. Remove the o-ring from the regulator body.

Attention! Replace the sealing ring with a new one each time the regulator is removed.

8. Install the regulator in the reverse order of removal, lubricating its o-ring with engine oil.