GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Spark 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Fuel Pressure Gage Installation and Removal

Special Tools

    • CH-47831 Fuel Line Disconnect Tool
    • J 34730-1A Fuel Pressure Gage
    • J 42982 Fuel Pressure Gage Adapter

Installation Procedure

Warning: 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.

Warning: 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.

Caution: Clean all of the following areas before performing any disconnections in order to avoid possible contamination in the system:

   • The fuel pipe connections
   • The hose connections
   • The areas surrounding the connections

  1. Relieve the fuel pressure. Refer to Fuel Pressure Relief.
  2. Disconnect the quick connect coupling of the fuel feed hose from the fuel feed pipe of the fuel rail. Use a shop towel in order to catch any remaining fuel that may leak.
  3. Install the J 42982 adapter between the fuel feed pipe of the fuel rail and of the fuel feed hose.

    4. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 320792 Size: SH
  4. Install the J 34730-1A gage to the J 42982 adapter , and tighten securely.
  5. Turn ON the ignition in order to pressurize the fuel system.
  6. Turn OFF the ignition.
  7. Check for any fuel leaks.

Removal Procedure

    Object Number: 320792 Size: SH
  1. Relieve the fuel pressure. Refer to the Fuel Pressure Relief.
  2. Remove the J 34730-1A gage from the J 42982 adapter .
  3. Using the CH-47831 tool , disconnect the quick connect coupling of the J 42982 adapter from the fuel feed pipe of the fuel rail. Use a shop towel in order to catch any remaining fuel that may leak.
  4. Disconnect the quick connect coupling of the fuel feed hose (3) from the J 42982 adapter , and remove the adapter. Use a shop towel in order to catch any remaining fuel that may leak.
  5. Connect the quick-connect fitting of the fuel feed hose (3) to the fuel feed pipe of the fuel rail.
  6. Turn ON the ignition in order to pressurize the fuel system.
  7. Turn OFF the ignition.
  8. Check for any fuel leaks.