Fuel Charging System

Pre-Service Procedures

The fuel charging system consists of the throttle body (9E926) , and the upper and lower intake manifolds (9424) . Prior to service or removal of the fuel charging system, the following steps must be taken:

1. Open hood (16612) and install protective covers.

2. Disconnect battery ground cable (14301) .

3. Remove fuel tank filler cap (9030) at fuel tank (9002) and release pressure.

    CAUTION: The fuel system is normally pressurized to 276 kPa (39 psi).

4. Release pressure from fuel system. Refer to Section 10-01 for fuel system pressure relief procedures. A fuel pressure relief valve (9H321) on the fuel injection supply manifold (9F792) is provided for this procedure.

Post-Service Procedures

After the service is complete and the fuel charging system is installed into the engine, the following Steps must be taken:

1. Install fuel tank filler cap at fuel tank .

2. Connect battery ground cable .

3. Add engine coolant if required.

    CAUTION: The fuel system is normally pressurized to 276 kPa (39 psi).

   NOTE: Check all connections at fuel injection supply manifold, push connect fittings, etc.

4. Turn ignition switch (11572) from RUN to OFF position several times without starting engine to check for fuel leaks.

5. Start engine and warm to operating temperature. Check for engine coolant leak if coolant was removed.

6. Perform Powertrain Control/Emissions Diagnosis Manual.