Fuel Charging System

The fuel charging system consists of the fuel injection supply manifold, fuel injectors, fuel pressure regulator and the intake manifold. Prior to service or removal of the fuel charging system, perform the following steps:

Pre-Service Procedures
1. Disconnect battery ground cable.
2. Remove fuel tank filler cap and release fuel tank pressure.

Fuel Pressure Relief

Fuel Pressure Gauge:

SPECIAL SERVICE TOOL(S) REQUIRED


WARNING: FUEL SUPPLY TUBES WILL REMAIN PRESSURIZED FOR LONG PERIODS OF TIME AFTER ENGINE SHUTDOWN. THIS PRESSURE MUST BE RELIEVED BEFORE SERVICING OF THE FUEL SYSTEM IS BEGUN. A VALVE IS PROVIDED ON THE FUEL INJECTION SUPPLY MANIFOLD FOR THIS PURPOSE.

1. Remove engine Air Cleaner (ACL).
2. Connect Fuel Pressure Gauge 310-012 (T80L-9974-B) or equivalent to the fuel pressure relief valve cap on the fuel injection supply manifold.
3. Open the manual valve on Rotunda Fuel (Gasoline) Pressure Test Kit 134-R0087 or equivalent for gasoline engines or Fuel Pressure Gauge 310-012 (T80L-9974-B) or equivalent to relieve fuel system pressure.

Post-Service Procedures
After the service is complete and the fuel charging system is installed to engine, perform the following steps:
1. Install fuel tank filler cap at fuel tank.
2. Connect battery ground cable.
3. Add engine coolant if required.
4. Turn ignition switch ON/OFF several times without starting engine to pressurize system. Check for fuel leaks.

WARNING: THE FUEL SYSTEM IS NORMALLY PRESSURIZED TO 276 KPA (40 PSI). USE CARE WHEN SERVICING THE FUEL SYSTEM OR PERSONAL INJURY MAY OCCUR.

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

5. Start engine and warm to operating temperature. Check for engine coolant leaks if coolant was removed.
6. Perform Powertrain Control Module On-Board Diagnostic.