Checking the pressure in the fuel system 4.4L (Discovery 3)

Special tool

Fuel pressure gauge 310-116-01	Fuel pressure test adapter 310-116 (LRT-19-006A)	Schrader valve and fuel adapter hose 310-149
Spring release tool for fuel system 310-D005

1. Disconnect a wire of weight from the storage battery.

2. Depressurize the fuel rail. Relieving pressure in the fuel supply system - 4.4L (19.50.02)

3. Connect the special tool.

• Connect to the fuel manifold.
• Connect to fuel line.
• Remove the Schrader valve dust cap.

4. Connect the special tool. Attach Schrader valve and pressure gauge.



5.

WARNING: Do not carry or use a cell phone while working on or near any fuel related parts. There is a risk of ignition of flammable vapours. Failure to follow these instructions may result in personal injury.

CAUTION: Some fuel will inevitably spill during this operation. Ensure that all necessary precautions have been taken to prevent fire and explosion.

Start the engine and let it run.

• Open the valve on the special tool.
• Record the fuel pressure reading.

6. See specifications for fuel pressure ratings.

7. Close the valve on the special tool.

8.

CAUTION: Some fuel will inevitably spill during this operation. Ensure that all necessary precautions have been taken to prevent fire and explosion.

WARNING: Do not smoke or walk with a lit cigarette or open flame of any type while working on or near fuel related items. There is a risk of ignition of flammable vapours. Failure to follow these instructions may result in personal injury.

WARNING: If fuel gets in your eyes, rinse them with cold water or eyewash solution and seek immediate medical attention.

WARNING: If fuel is swallowed, do not induce vomiting and seek immediate medical attention. Failure to follow these instructions may result in personal injury.

WARNING: Do not carry or use a cell phone while working on or near any fuel related parts. There is a risk of ignition of flammable vapours. Failure to follow these instructions may result in personal injury.

Remove the special tool.

• Place an absorbent cloth to collect spilled liquid.
• Disconnect the special tool from the Schrader valve.

9. Remove the special tool.

• Place an absorbent cloth to collect spilled liquid.
• Disconnect the special tool from the fuel manifold.
• Use a special tool.
• Disconnect the special tool from the fuel line.
• Use a special tool.

10. Install the Schrader valve dust cap on the special tool.

11. Connect the fuel line. Relieving pressure in the fuel supply system - 4.4L (19.50.02)

12. Connect a wire of weight to the storage battery.