Placement of the regulator on the engine and elements of connecting the regulator (4A-FE, 5E-FE, 7A-FE): 1 - fuel pressure regulator, 2 - fuel return hose, 3 - regulator mounting bolt (M3 = 9.3 Nm), 4 - vacuum hose, 5 - O-ring
Placement of the regulator on the engine (3S-FE, 4S-FE): 1 - to the intake manifold gas filter, 2 - vacuum hose, 3 - fuel pressure regulator, 4 - fuel return pipe
Check on the engine
Check fuel pressure (see "Fuel pump check").
Removing the regulator
1. Disconnect the wire from the negative (-) battery terminals.
2. (3S-FE, 4S-FE) Remove the accelerator cable bracket by first disconnecting the control cables from the throttle actuator mechanism and unscrewing the two bolts.
3. (3S-FE, 4S-FEJ Remove the cylinder head cover.
4. (3S-GE) Remove intake manifold (see below)
5. (3S-GE) Remove the #2 engine lifting hook.
6. Disconnect the vacuum hose.
7. Disconnect the fuel return hose. by substituting a container or placing a rag under the regulator.
8. Remove the regulator by carefully loosening its fasteners.
Regulator installation
3S-FE, 4A-FE, 4S-FE, 5E-FE, 7A-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.
4A-FE, 5E-FE, 7A-FE | 3S-GE |
- b) Swinging the regulator left and right, connect the regulator to the fuel manifold.
- V) (3S-GE) Turn the adjuster counterclockwise until the vacuum tube is in the position shown in the figure. Tighten locknut. Tightening torque: 29 Nm.
- G) Attach the regulator with two bolts to the fuel manifold. Tightening torque: 9 Nm.
Note: Do this operation correctly as shown in the figure, avoiding pinching the O-ring.
1 - fuel manifold, 2 - O-ring, 3 - fuel pressure regulator, 4 - correct, 5 - incorrect
2. Connect the fuel return hose, securing it with a clamp. Tightening torque 29 N.m
3. Connect the vacuum hose
4. Check that there is no fuel leakage from the connections.
5. (3S-FE, 4S-FE) Install the cylinder head cover.
6. (3S-FE, 4S-FE) Install the accelerator cable bracket, connect the control cables to the throttle actuator mechanism, and tighten the two bolts.
7. (3S-GE) Install hook #2 to lift the engine.
8. (3S-GE) Install the intake manifold.
9. Connect (-) wire with negative (-) battery terminal.