Special Tools

CH-48027 Digital Pressure Gage

Warning: Refer to Gasoline/Gasoline Vapors Warning in the Preface section.

Warning: Remove the fuel tank cap and relieve the fuel system pressure before servicing the fuel system in order to reduce the risk of personal injury. After you relieve the fuel system pressure, a small amount of fuel may be released when servicing the fuel lines, the fuel injection pump, or the connections. In order to reduce the risk of personal injury, cover the fuel system components with a shop towel before disconnection. This will catch any fuel that may leak out. Place the towel in an approved container when the disconnection is complete.

1. Relieve the fuel system fuel pressure. Refer to Fuel Pressure Relief.
2. Connect CH-48027-1 (1) to CH-48027-2 (2).
3. Remove the shop towel around the fuel rail service port and place in an approved container.
4. If necessary, perform tests and/or diagnostic. Refer to the manufacturers instructions for CH48027 proper usage.

1. Relieve the fuel system fuel pressure, if necessary. Perform the following steps:

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.

1.1.	Cover the fuel rail service port with a shop towel.

1.2.	Route the bleed hose of the CH-48027-2 (2) into an approved fuel container.

1.3.	Open the valve on the CH-48027-2 (2) in order to bleed fuel in the fuel rail.

1.4.	Close the valve on the CH-48027-2 (2).

1.5.	Remove the bleed hose of the CH-48027-2 (2) from an approved fuel container.

1.6.	Remove the shop towel around the fuel rail service port and place in an approved container.

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

2. Disconnect CH-48027-1 (1) from CH-48027-2 (2).
3. Disconnect CH-48027-2 (2) from CH-48027-3 (4).
4. Disconnect CH-48027-3 (4) from the fuel rail service port.
5. Remove the fuel rail service port cover.
6. Tighten the fuel filler cap.