Fuel system pressure test 4.0L (Discovery 3)

Special tool

Fuel pressure gauge 310-116-01

Fuel pressure test adapter 310-116 (LRT-19-006A)

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

2. Remove the engine cover. Engine cover - 4.0L (12.30.50)

3. Release the clamp and disconnect the purge line.

4. Remove the fuel rail Schrader valve cap.



5. Install the special tool on the Schrader valve on the fuel rail.



6. Connect the purge line.


7.

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.

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.

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.

8. See specifications for fuel pressure ratings.

9. Close the valve on the special tool.

10. Release the clamp and disconnect the purge line.

11. Disconnect the special tool from the Schrader valve.

12. Place the cap on the Schrader valve.

13. Connect the purge line.

14. Install the engine cover. Engine cover - 4.0L (12.30.50)

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