We replace the fuel pressure reducing valve if the fuel pressure is not correct
Reduce the pressure in the fuel system if the engine has just been stopped.
Disconnect the wire from the "negative" terminal of the battery.
Remove the engine fuel line.
Disconnect fuel drain hose 1 and vacuum hose 4 from pressure reducing valve 3.
Remove two fastening bolts 2 and remove the pressure reducing valve 3 from the engine fuel line.
Install the new valve in reverse order
Let's analyze this operation in more detail:
Relieve fuel pressure, for this:
With the ignition off, remove the cover of the fuse box and remove the fuel pump fuse F9.
We start the engine and let it work out the gasoline that is in the system under pressure.
After the engine stalls, turn off the ignition and replace the fuse.
Disconnect the negative battery terminal
Remove the fuel rail, for this:
Disconnect the idle speed control connector
Using a screwdriver, we loosen the clamp of the air supply hose to the throttle body
Remove the air supply duct and the air damper cable from the throttle pipe
Use a screwdriver to loosen the clamp of the lower (outlet) hose of the idle speed regulator.
Using a screwdriver, loosening the clamp, remove the hose of the crankcase ventilation system.
Using a screwdriver, loosening the clamp, remove the vacuum brake booster hose.
Using a screwdriver, loosening the clamp, remove the fuel pressure regulator hose.
Using a 13 key, we unscrew the nut that secures the tip of the “ground” wire to the first stud of the intake manifold.
Similarly, disconnect the wire from the last intake manifold stud.
Then, having unscrewed the remaining nuts of the intake manifold studs with a wrench by 13, remove the receiver.
With a screwdriver, loosen the clamp of the supply hose to the ramp
Remove the supply hose from the fitting of the fuel rail.
Using a screwdriver, loosening the clamp, remove the crankcase ventilation hose from the idling system pipe.
Using a screwdriver, loosening the clamp, remove the drain hose from the fitting of the fuel pressure regulator.
Using a 10 key, we unscrew the two screws securing the fuel rail to the intake manifold and remove the rail.
Use a screwdriver to unscrew the two screws securing the regulator to the ramp.
We install the new regulator in the reverse order, making sure that a sealing collar is put on its fitting.