Fuel System Precautions

FUEL SYSTEM






1. When disconnecting the high fuel pressure line, a small amount of gasoline will spill out, so observe the following procedure:
a. Put a 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. Tighten the union bolt by hand.
c. Tighten the union bolt to the specified torque.

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






(Flare Nut Type)
a. Apply a light coat of engine oil the flare and tighten the flare nut by hand.
b. Using SST, tighten the flare nut to specified torque.

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

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






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










4. Install the injector to delivery pipe and cylinder head as shown.
5. Check that there are no fuel leaks after performing any maintenance on the fuel system.
a. With engine stopped, turn the ignition switch "ON".






b. Using a service wire, short terminals +B and FP of the check connector.










c. When the fuel return hose is pinched, the pressure within high pressure line will rise to approx. 4 kg/cm2 (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.