Fuel System Precautions

FUEL SYSTEM





1. When disconnecting the high fuel pressure line, a large amount of gasoline will spill out, so observe the following procedure.
(a) Put a container under the connection.
(b) Slowly loosen the connection.
(c) Disconnect the connection.
(d) (Flare nut type)
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) Hand tighten the union bolt.
(c) 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 tighten the flare nut.
(b) Then using SST, tighten the nut to the specified torque.

SST 09631-22020

Torque: 310 kg-cm (22 ft-lb, 30 N.m)





3. Observe the following precautions when removing and installing the injectors.
(a) Never reuse a 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. Confirm that there are no fuel leaks after performing any maintenance on the fuel system.
(a) With engine stopped, turn the ignition switch ON.
(b) Short terminals Fp and +B of the check connector.

NOTE: The check connector is located near the No.2 relay block.





(c) When the fuel return hose is pinched, the pressure within the high pressure line will rise to about 4 kg/cm (57 psi, 392 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.