Fuel Pressure Regulator Replacement w/o EGR

1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

2. Disconnect the negative battery cable.
3. Remove the fuel rail assembly from the engine. Refer to Fuel Injection Fuel Rail Assembly Replacement .
4. Remove the attaching screw (8) for the pressure regulator .
5. Remove the pressure regulator assembly (1) from the fuel rail.

Twist the assembly back and forth while pulling.

Important: If the fuel pressure regulator is to be re-installed, inspect the filter screen (2) for contamination. If the screen contaminated, remove and discard the filter screen.

1. Lubricate the new O-ring seal (3) for the rail-to-regulator inlet fitting with clean engine oil and install the O-ring in the regulator.
2. Install the regulator assembly (1).

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.

Important: Whenever there is not enough thread-locking material on the threads of reusable hardware, apply Loctite® 262 to ensure proper locking.

3. Install the pressure regulator attaching screw (8).

Tighten
Tighten the screw to 11 N·m (97 lb in).

4. Install the fuel rail assembly. Refer to Fuel Injection Fuel Rail Assembly Replacement .
5. Reconnect the negative battery cable.
6. Use the following steps in order to inspect for fuel leaks:

6.1.	Turn on the ignition for 2 seconds, leaving the engine off .

6.2.	Turn off the ignition for 10 seconds.

6.3.	Turn on the ignition, leaving the engine off.

6.4.	Inspect for fuel leaks.