Tools Required

J 34730-1A Fuel Pressure Gauge

Caution: Remove the fuel tank cap and relieve the fuel system pressure before servicing the fuel system in order to reduce the risk of personal injury. After you relieve the fuel system pressure, a small amount of fuel may be released when servicing the fuel lines, the fuel injection pump, or the connections. In order to reduce the risk of personal injury, cover the fuel system components with a shop towel before disconnection. This will catch any fuel that may leak out. Place the towel in an approved container when the disconnection is complete.

1. Turn OFF the ignition.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

2. Disconnect negative battery cable in order to avoid possible fuel discharge if an accidental attempt is made to start the engine. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
3. Loosen the fuel filler cap (1) to relieve fuel tank vapor pressure.



4. Remove the intake manifold sight shield nuts (2) from the intake manifold sight shield (1).
5. Remove the intake manifold sight shield (1).
6. Connect the J 34730-1A to fuel pressure connection. Wrap a shop towel around fitting while connecting gauge to avoid spillage.
7. Install the bleed hose into an approved container and open valve to bleed system pressure. Fuel connections are now safe for servicing.
8. Drain any fuel remaining in the fuel pressure gauge into an approved container.
9. Tighten the fuel filler cap.
10. Turn OFF the ignition.
11. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.

11.1.

Turn ON the ignition for 2 seconds after service is completed.

11.2.

Turn OFF the ignition for 5 seconds.

11.3.

Turn ON the ignition.

11.4.

Check for fuel leaks.