Fuel Delivery and Air Induction: Service and Repair

Quick Connect Fitting Disconnecting and Connecting


The fuel system is under a constant pressure (even with the engine off). Before servicing any fuel system component the pressure must be released. Refer to => [ Fuel System Pressure Release Procedure ] Service and Repair.


Before disconnecting a quick connect fitting, pay attention to what type of fitting is being used. This will prevent unnecessary fitting or fitting latch breakage.


The interior components (O-rings, clips) of the quick connect fittings are not serviced separately, but new plastic spacers and latches are available for some types. If service parts are not available, do not attempt to repair the damaged fitting or fuel line. If repair is necessary, replace the complete fuel line assembly.

Different types of quick connect fittings are used to attach the various fuel system components and lines. They are:

• Single button type

• Two button type

• Pinch type

• Single tab type

• Two tab type

• Plastic retainer ring type

• Latch clip - type 1

• Latch clip - type 2

• Wing type

Some are equipped with safety latch clips. Some may require the use of a special tool for disconnecting and removal.

Disconnecting

- Perform the fuel pressure release procedure. Refer to => [ Fuel System Pressure Release Procedure ] Service and Repair.

- Disconnect the negative battery cable.

- Clean the fitting of any foreign material before disassembly.

Single Button Type Fitting






- This type of fitting is equipped with a single push button (2) located on the quick connect fitting (1).






- The push button is attached to two internal latches (1). To disconnect, press on the push button with your thumb and unlatch the fitting from the fuel line. Special tools are not required for disconnecting. Do not attempt to pry or pull up on push button. Latches will be broken.

2 Button Type Fitting






- This type of fitting is equipped with a push button (2) located on each side of the quick connect fitting (1). To disconnect , press on both buttons simultaneously in order to separate. Special tools are not required for disconnecting.

Pinch Type Fitting






- This fitting is equipped with two finger tabs (2). To disconnect, pinch both tabs (2) together in order to separate. Special tools are not required for disconnecting.

Single Tab Type Fitting






- This type of fitting (3) is equipped with a single pull tab (1). The tab is removable. After the tab is removed, the quick connect fitting can be separated from fuel system component. Special tools are not required for disconnecting.






- To disconnect, press release tab on the side of the fitting in order to release the pull tab (1). If the release tab is not pressed prior to releasing the pull tab, the pull tab will be damaged.

- While pressing the release tab on the side of the fitting, use a screwdriver (2) to pry up the pull tab (1).

- Raise the pull tab (1) until it separates from the quick connect fitting (3).

Two Tab Type Fitting






- This type of fitting (2) is equipped with tabs (1) located on both sides of fitting. The tabs are supplied for disconnecting the quick connect fitting from the component being serviced.

- To disconnect, squeeze the plastic retainer tabs (1) against the sides of the quick connect fitting with your fingers. Tool use is not required for removal and may damage the plastic retainer.

- Pull the fitting from the fuel system component being serviced.

- The plastic retainer (1) will remain on the component being serviced after the fitting is disconnected. The O-rings and spacer will remain in the quick connect fitting body (2).

Plastic Retainer Ring Type Fitting






- This type of fitting can be identified by the use of a full round plastic retainer ring (4) usually black in color.

- To disconnect, firmly push the fitting towards the component being serviced while firmly pushing the plastic retainer ring into the fitting (6). With the plastic ring depressed, pull the fitting from the component being serviced. The plastic retainer ring must be pressed squarely into the fitting body. If this retainer is cocked during removal, it may be difficult to disconnect the fitting. Use an open end wrench on the shoulder of the plastic retainer ring to aid in disconnecting.

- After disconnecting, the plastic retainer ring will remain with the quick connect fitting body.

- Inspect the fitting connector body, plastic retainer ring and fuel system component for damage. Replace as necessary.

Latch Clip - Type 1






- Depending on vehicle model and engine, 2 different types of safety latch clips are used. Type 1 (4) is tethered to the fuel line and type 2 is not. A special tool will be necessary to disconnect the fuel line after the latch clip is removed. The latch clip may be used on certain fuel line/fuel rail connections, or to join the fuel lines together.

- Pry up on the latch clip (4) with a screwdriver (3).

- Slide the latch clip (4) toward the fuel rail while lifting with the screwdriver.






- Insert special fuel line removal tool (Snap-On number FIH 9055-1 or equivalent) (1) into the fuel line (2). Use the tool to release the locking fingers in the end of the fuel line.

- With the special tool still inserted, pull the fuel line from the fuel rail.

- After disconnecting, the locking fingers will remain within the quick connect fitting at the end of the fuel line.

- Disconnect the quick connect fitting from the fuel system component being serviced.

Latch Clip - Type 2






- Depending on vehicle model and engine, 2 different types of safety latch clips are used. Type 1 is tethered to the fuel line and type 2 is not. A special tool will be necessary to disconnect the fuel line after the latch clip is removed. The latch clip may be used on certain fuel line/fuel rail connections, or to join the fuel lines together.

- Separate and unlatch the small arms on the end of the clip and swing the clip away from the fuel line.

- Slide the latch clip toward the fuel rail while lifting with screwdriver.






- Insert a special fuel line removal tool (Snap-On number FIH 9055-1 or equivalent) (1) into fuel line (2). Use the tool to release the locking fingers in the end of the line.

- With the special tool still inserted, pull the fuel line from the fuel rail.

- After disconnecting, the locking fingers will remain within the quick connect fitting at the end of the fuel line.

- Disconnect the quick connect fitting from the fuel system component being serviced.

Wing Type






- A special tool is not necessary to disconnect this type of fitting (2). This line is used on different fuel and emission components. The graphic shows the fitting used on an evaporative emission canister.

- Using two fingers, push on the fitting wings (2).

- Pull and disconnect the fitting while holding the wings.

- After disconnecting, the locking fingers will remain within the quick connect fitting.

Connecting

- Inspect the quick connect fitting body and fuel system component for damage. Replace as necessary.

- Prior to connecting the quick connect fitting to the component being serviced, check the condition of the fitting and component. Clean the parts with a lint free cloth. Lubricate with clean engine oil.

- Insert the quick connect fitting onto the fuel line or fuel system component until the built on stop on the fuel line or component rests against the back of the fitting.

- Continue pushing until a click is felt.

- On the single tab type fitting: push the new tab down until it locks into place in the quick connect fitting.

- Verify a locked condition by firmly pulling on the fuel line and fitting (15 to 30 lbs).

- On the latch clip equipped: install the latch clip (snaps into position). If the latch clip will not fit, this indicates the fuel line is not properly installed to the fuel rail (or other fuel line). Check the fuel line connection.

- Connect the negative battery cable.

- Start the engine and check for leaks.