Serie A
1 - fuel return hose,
2 - vacuum hose,
3 - fuel pressure regulator,
4 - O-ring seal.
3S-FE, 4S-FE
1 - vacuum hose,
2 - fuel pressure regulator,
3 - O-ring seal,
4 - gasket on the engine
Checking on the engine
Check the fuel pressure (see "Fuel pump - check on engine").
Removal the regulator
4A-FE, 5A-FE, 7A-FE
Disconnect the cable from the negative (-) battery terminal.
Disconnect the vacuum hose.
Disconnect the fuel return hose.
Remove the pressure regulator by unscrewing the 2 mounting bolts.
EE, 4S-FE
Disconnect the cable from the negative (-) battery terminal.
2. Disconnect the vacuum hose.
3. Disconnect fuel pipe No.1 by unscrewing the bypass bolt.
4. Remove the pressure regulator by unscrewing the 2 mounting bolts.
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Installing the regulator
4A-FE, 5A-FE, 7A-FE
a) Apply a thin layer of fuel (or lithol) to the new O-ring and install it on the regulator.
b) By rocking the regulator left and right, connect the regulator to the fuel manifold.
c) Tighten the 2 regulator mounting bolts.
- Tightening torque - 10 Nm
Note: Perform 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) to the new O-ring and install it on the regulator.
b) By rocking the regulator left and right, connect the regulator to the fuel manifold.
c) Tighten the 2 regulator mounting bolts.
- Tightening torque - 8 Nm
Note: Perform this operation correctly as shown in the figure, avoiding pinching the O-ring.
1 - fuel manifold,
2 - O-ring seal,
3 - fuel pressure regulator,
4 - correct,
5 - incorrect.
3. Connect fuel pipe No.1.
- Tightening torque - 18 Nm
4. Connect the vacuum hose.
5. Connect the wire to the negative terminal of the battery.