Serie A
1 - fuel return hose,
2 - vacuum hose,
3 - fuel pressure regulator,
4 - ring seal.
3S-FE, 4S-FE
1 - vacuum hose,
2 - fuel pressure regulator,
3 - ring seal,
4 - gasket on the engine
Check on the engine
Check fuel pressure (see "Fuel pump - checking on the engine").
Removing the regulator
4A-FE, 5A-FE, 7A-FE
Disconnect the wire from the negative (-) battery terminals.
Disconnect the vacuum hose.
Disconnect the fuel return hose.
Remove the pressure regulator by unscrewing the 2 mounting bolts.
EE, 4S-FE
Disconnect the wire from the negative (-) battery terminals.
2. Disconnect the vacuum hose.
3. Disconnect the fuel pipe No. 1 by unscrewing the bypass bolt.
4. Remove the pressure regulator by unscrewing the 2 mounting bolts.
Regulator installation
4A-FE, 5A-FE, 7A-FE
A) Apply a thin layer of fuel (or lithol) on a new o-ring and install it on the regulator.
b) Swinging the regulator left and right, connect the regulator to the fuel manifold.
V) Install 2 regulator mounting bolts.
- Tightening torque - 10 Nm
Note: Do this operation correctly as shown in the figure, avoiding pinching the O-ring.
2. Connect the fuel return hose.
2. Connect the vacuum hose.
3S-FE, 4S-FE
1. Install the regulator.
A) Apply a thin layer of fuel (or lithol) on a new o-ring and install it on the regulator.
b) Swinging the regulator left and right, connect the regulator to the fuel manifold.
V) Install 2 regulator mounting bolts.
- Tightening torque - 8 Nm
Note: Carry out this operation correctly as shown in the figure, avoiding pinching the O-ring.
1 - fuel manifold,
2 - ring seal,
3 - fuel pressure regulator,
4 - correct,
5 is wrong.
3. Connect fuel pipe #1.
- Tightening torque - 18 Nm
4. Connect the vacuum hose.
5. Connect a wire to the negative plug of the storage battery.