Fuel System Precautions

FUEL SYSTEM





1. When disconnecting the connection of the high fuel pressure line, a large amount of gasoline will come Out so observe the following procedure:
(a) Put a container under the connection.
(b) Slowly loosen the connection.
(c) Disconnect the connection.
(d) Plug the connection with a rubber plug.





2. When connecting the flare nut or union bolt on the high pressure pipe union, observe the following procedure:

[Union bolt type]
(a) Always use a new gasket.
(b) First tighten the union bolt by hand.
(c) Then tighten the bolt to the specified torque.

Torque: 300 kg-cm (22 ft-lb, 29 N m)





[Flare nut type]
(a) Apply a thin coat of oil to the flare and first tighten the flare nut by hand.
(b) Using SST, tighten the nut to the specified torque.

SST 09631-22020

Torque: 390 kg-cm (28 ft-lb. 38 N m)

NOTE:
- Use a torque wrench with a fulcrum length of 30 cm (11.81 in.).





3. Take the following precautions when removing and installing the injectors.
(a) Never reuse an 0-ring.
(b) When placing an 0-ring on the injector, take care not to damage it in any way.
(c) Lubricate the 0-ring with spindle oil or gasoline before installing never use engine, gear or brake oil.





4. Install the injector to the delivery pipe and intake manifold as shown in the figure.





5. Check that there are no fuel leaks after performing maintenance on the fuel system.
(a) With engine stopped, turn the ignition switch ON.
(b) Short circuit the terminals of the fuel pump check connector with a service wire.





(c) When the fuel return hose is pinched, the pressure within the high pressure line will rise to about 3.1 - 3.2 kg/cm2 (44 - 46 psi, 304 - 314 kPa). In this state, check to see that there are no leaks from any part of the fuel system.

CAUTION:
- Always pinch the hose. Avoid bending as it may cause the hose to crack.