Fuel System Safety Procedures
GENERAL FUEL SYSTEM PRECAUTIONS1. Before working on the fuel system, disconnect the negative (-) terminal cable from the battery.
NOTE: Any diagnostic trouble code retained by the computer will be erased when the negative (-) terminal cable is removed from the battery. Therefore, if necessary, read the diagnosis before removing the negative (-) terminal cable from the battery.
2. Do not smoke or work near an open flame when working on the fuel system.
3. Keep gasoline away from rubber or leather parts.
FUEL LINES
When connecting the flare nut or union bolt on the high pressure pipe union, observe the following procedures:
Union Bolt Type:
- Always use 2 new gaskets.
- Tighten the union bolt by hand.
- Tighten the union bolt to the specified torque.
Torque: 30 Nm (310 kgf.cm; 21 ft.lb)
Flare Nut Type:
- Apply a light coat of engine oil to the flare nut, and tighten the flare nut by hand.
- Using SST, tighten the flare nut to specified torque. (SST 09631-22020)
NOTICE: Do not rotate the fuel pipe, when tightening the flare nut.
Torque:
- Fuel pump side: 28 Nm (28 kgf.cm; 21 ft.lb)
- Others: 30 Nm (310 kgf.cm; 22 ft.lb)
HINT: Use a torque wrench with a fulcrum length of 30 cm (11.81 in.)
FUEL INJECTORS
Observe the following precautions when removing and installing the injectors.
- Never reuse the O-ring.
- When placing a new O-ring on the injector, take care not to damage it in any way.
- Coat a new O-ring with spindle oil or gasoline before installing-never use engine, gear or brake oil.
- Install the injector to the delivery pipe and intake manifold as shown in the illustration.