FUEL LINES AND HOSES

Perform the Fuel System Pressure Relief Procedure before servicing the fuel system. The procedure must be done to bleed fuel pressure from the system before removing clamps or hoses.

Use care when removing fuel hoses to prevent damage to hose or hose nipple. Always use new hose clamps, of the correct type, during reassembly. Tighten hose clamps to 1 NIm (10 in. lbs.) torque. Do not use aviation style clamps on this system or hose damage may result.

FUEL SYSTEM PRESSURE RELEASE PROCEDURE

CAUTION: Before servicing the fuel pump, fuel lines, fuel filter, throttle body, or fuel injector, the fuel system pressure must be released.

(1)Loosen fuel filler cap to release fuel tank pres-

sure.

(2)Disconnect injector wiring harness connector (Fig. 1).

tery positive post for no longer than 5 seconds. This releases system pressure.

(5)Remove jumper wires.

(6)Continue fuel system service.

THROTTLE BODY

CAUTION: The fuel system is under a constant pressure of 270 kPa (39 psi). When servicing the fuel portion of the throttle body, release fuel pressure before disconnecting any tubes. Refer to the fuel pressure release procedure.

Always reassemble throttle body components with new O-rings and seals where applicable. Never use silicone lubricants on O-rings or seals, damage may result. Use care when removing fuel tubes to prevent damage to quick connect fittings or tube ends. Refer to Fuel Hoses, Clamps, and Quick Connect Fittings in the Fuel Delivery Section of this Group.

REMOVAL

(1)Remove air cleaner (Fig. 2).

(2)Perform fuel system pressure release procedure.

(3)Disconnect negative battery cable.

Fig. 1 Injector Harness Connector

(3)Connect a jumper wire between terminal Number 1 of the injector harness and engine ground.

(4)Connect a jumper wire to the positive terminal Number 2 of the injector harness and touch the bat-

Fig. 2 Throttle Body and Air Cleaner Assembly

(4) Disconnect vacuum hoses and electrical connectors (Fig. 3).