Standard Procedure: Disconnecting

WARNING: The fuel system is under a constant pressure (even with engine off). Before servicing any fuel system hose, fitting or line, fuel system pressure must be released. refer to FUEL SYSTEM PRESSURE RELEASE .

CAUTION: The interior components (o-rings, spacers) of some types of quick-connect fitting are not serviced separately. If service parts are not available, do not attempt to repair a damaged fitting or fuel line. If repair is necessary, replace complete fuel line assembly.

Fig 1: Identifying Quick-Connect Fitting

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Perform fuel pressure release procedure. Refer to FUEL PRESSURE RELEASE PROCEDURE .
Disconnect negative battery cable from battery.
Clean fitting of any foreign material before disassembly.
2-Button Type Fitting: This type of fitting (1) is equipped with a push-button located on each side of quick-connect fitting (2). Press on both buttons simultaneously for removal. Tools are not required for disconnection.

Fig 2: Identifying 2-Button Type Fitting
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Pinch-Type Fitting: This fitting (1) is equipped with two finger tabs (2). Pinch both tabs together while removing fitting. Tools are not required for disconnection.

Fig 3: Identifying Pinch-Type Fitting
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Single-Tab Type Fitting: This type of fitting (3) is equipped with a single pull tab (1). The tab is removable. After tab is removed, quick-connect fitting can be separated from fuel system component. Tools are not required for disconnection.

Fig 4: Pressing Release Tab On Side Of Fitting To Release Pull Tab
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Press release tab on side of fitting to release pull tab (1). If release tab is not pressed prior to releasing pull tab, pull tab will be damaged.
While pressing release tab on side of fitting, use screwdriver (2) to pry up pull tab.
Raise pull tab until it separates from quick-connect fitting.

Fig 5: Identifying Two-Tab Type Fitting
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Two-Tab Type Fitting: This type of fitting (2) is equipped with tabs located on both sides of fitting (1). The tabs are supplied for disconnecting quick-connect fitting from component being serviced.
1. To disconnect quick-connect fitting, squeeze plastic retainer tabs (1) against sides of quick-connect fitting with your fingers. Tool use is not required for removal and may damage plastic retainer.
2. Pull fitting from fuel system component being serviced.
3. The plastic retainer will remain on component being serviced after fitting is disconnected. The o-rings and spacer will remain in quick-connect fitting connector body.
Plastic Retainer Ring Type Fitting: This type of fitting can e identified by the use of a full round plastic retainer ring (4) usually black in color.

Fig 6: Identifying Plastic Retainer Ring Type Fitting
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
1. To release fuel system component from quick-connect fitting, firmly push fitting towards component being serviced while firmly pushing plastic retainer ring into fitting (6). With plastic ring depressed, pull fitting from component.
  The plastic retainer ring must be pressed squarely into fitting body. If this retainer is cocked during removal, it may be difficult to disconnect fitting. Use an open-end wrench on shoulder of plastic retainer ring to aid in disconnection.
2. After disconnection, plastic retainer ring will remain with quick-connect fitting connector body.
3. Inspect fitting connector body, plastic retainer ring and fuel system component for damage. Replace as necessary.
  
  Fig 7: Prying Up On Latch Clip
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Latch Clips - Type 1: Depending on vehicle model and engine, 2 different types of safety latch clips are used. Type-1 (4) is tethered to fuel line and type-2 is not. A tool will be necessary to disconnect fuel line after latch clip is removed. The latch clip may be used on certain fuel line/fuel rail connection, or to join fuel lines together.
Pry up on latch clip with a screwdriver (3).
Slide latch clip toward fuel rail while lifting with screwdriver.

Fig 8: Inserting Fuel Line Removal Tool Into Fuel Line
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Insert a fuel line removal tool (Snap-On number FIH 9055-1 or equivalent) into fuel line (1). Use tool to release locking fingers in end of line.
With tool still inserted, pull fuel line from fuel rail.
After disconnection, locking fingers will remain within quick-connect fitting at end of fuel line.
Disconnect quick-connect fitting from fuel system component being serviced.

Fig 9: Disconnecting Quick-Connect Fitting From Fuel System Component
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Latch Clips - Type 2: Depending on vehicle model and engine, 2 different types of safety latch clips are used. Type-1 is tethered to fuel line and type-2 is not. A tool will be necessary to disconnect fuel line after latch clip is removed. The latch clip may be used on certain fuel line/fuel rail connection, or to join fuel lines together.
Type 2: Separate and unlatch 2 small arms (1) on end of clip and swing away from fuel line.
Slide latch clip toward fuel rail while lifting with screwdriver.

Fig 10: Inserting Fuel Line Removal Tool Into Fuel Line
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Insert a fuel line removal tool (Snap-On number FIH 9055-1 or equivalent) into fuel line (1). Use tool to release locking fingers in end of line.
With tool still inserted, pull fuel line from fuel rail.
After disconnection, locking fingers will remain within quick-connect fitting at end of fuel line.
Disconnect quick-connect fitting from fuel system component being serviced.