Pre-Service Procedures

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

NOTE: The fuel charging system consists of the throttle body and the upper and lower intake manifolds.

Prior to service or removal of the fuel charging system, the following steps must be taken:

1. Disconnect battery ground cable.

2. Remove fuel tank filler cap at fuel tank and release pressure.

Fuel Pressure Relief Procedure

NOTE: A fuel pressure relief valve on the fuel injection supply manifold is provided for this procedure.

1. Install Multiport Fuel Pressure Gauge T80L-9974-B or equivalent to the fuel pressure relief valve on the fuel injection supply manifold.

2. Direct discharge hose into a suitable container.

3. Release pressure from fuel system.