J 34730-1A Fuel Pressure Gage

Caution: Gasoline or gasoline vapors are highly flammable. A fire could occur if an ignition source is present. Never drain or store gasoline or diesel fuel in an open container, due to the possibility of fire or explosion. Have a dry chemical (Class B) fire extinguisher nearby.

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .

Important: Due to an access hole in the fuel tank shield, removal of the shield should not be necessary to access the fuel pressure service connection.

2. Only if necessary remove the fuel tank shield. Refer to Fuel Tank Shield Replacement .
3. Remove the fuel pressure service connection cap, located near the fuel filter.




Caution: Wrap a shop towel around the fuel pressure connection in order to reduce the risk of fire and personal injury. The towel will absorb any fuel leakage that occurs during the connection of the fuel pressure gage. Place the towel in an approved container when the connection of the fuel pressure gage is complete.

4. Install the J 34730-1A fuel pressure gage to the fuel pressure service connection, located near the fuel filter.
5. Turn ON the ignition.

Caution: Do not drain the fuel into an open container. Never store the fuel in an open container due to the possibility of a fire or an explosion.

6. Place the bleed hose of the fuel pressure gage into an approved gasoline container.
7. Open the bleed valve on the fuel pressure gage in order to bleed the air from the fuel pressure gage.
8. Command the fuel pump ON with a scan tool.
9. Close the bleed valve on the fuel pressure gage.
10. Inspect for fuel leaks.

1. Place the fuel pressure gage bleed hose into an approved container and open the bleed valve to bleed fuel system pressure.
2. Place a shop towel under the fuel pressure gage adaptor fitting to catch any remaining fuel spillage.



3. Remove the J 34730-1A from the pressure gage fitting.
4. Drain any fuel remaining in the fuel pressure gage into an approved container.
5. install the fuel pressure service connection cap.
6. Inspect for leaks using the following procedure:

6.1.	Turn ON the ignition, with the engine OFF for 2 seconds.

6.2.	Turn OFF the ignition for 10 seconds.

6.3.	Turn ON the ignition, with the engine OFF.

6.4.	Inspect for fuel leaks.

7. Install the fuel tank shield if removed. Refer to Fuel Tank Shield Replacement .