Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Coupling Allocation
The couplings, for the fuel, vacuum and ventilation lines are color coded. There is either a colored dot on the connection or the release button is the corresponding color.
The coupling must audibly engage when locking.
Pull on the coupling to make sure it is secure.
| Connector | Color marking on the connector |
|---|---|
| Fuel supply | Black |
| Fuel Return Line | Blue |
| Ventilation | White beige |
| Vacuum | Green |
The fuel supply line is under pressure. Wear protective eyewear and protective clothing in order to avoid injury and contact with the skin. Wrap a cloth around the connection before removing a fuel hose. Remove the hose connection carefully to release the pressure.
Version 1
Coupling with release buttons on the right and left -arrows- sides.
Disconnecting:
It is necessary to counter hold the separating point -2- inside the engine compartment.
-- Insert the Lever - Fuel LineT10468 between the shield and the fuel line -arrow- -2- and counter hold it.
Continuation for all other separating points in the fuel system:
-- Push the coupling -1- in the -direction of arrow A-.
-- Press the release buttons and pull the coupling -1- off the fuel line -2- in the -direction of arrow B-.
Follow the color coding when installing, refer to Coupling Allocation .
The coupling must audibly engage when locking.
-- Pull on the coupling to make sure it is secure.
Version 2
Coupling with a pull release -arrow-.
Disconnecting:
-- Push the coupling -1- in the -direction of arrow A-.
-- Pull the pull release -2- in the -direction of arrow B-.
-- Pull the coupling -1- off the fuel line -3- in the -direction of arrow B-.
Follow the color coding when installing, refer to Coupling Allocation .
The coupling must audibly engage when locking.
-- Pull on the coupling to make sure it is secure.
Version 3
Coupling with a release button -arrow- on the front.
Disconnecting:
-- Press the release button -arrow- and remove the coupling.
Follow the color coding when installing, refer to Coupling Allocation .
The coupling must audibly engage when locking.
-- Pull on the coupling to make sure it is secure.
Version 4
Coupling with the release buttons on the right and left -arrows- sides.
Disconnecting:
-- Push the coupling in the -direction of arrow A-.
-- Press the release buttons -arrows- and remove the coupling.
Follow the color coding when installing, refer to Coupling Allocation .
The coupling must audibly engage when locking.
-- Pull on the coupling to make sure it is secure.
Version 5
Coupling with the release buttons on the left and right -arrows- sides.
Disconnecting:
-- Press in the release buttons -arrows- and remove the coupling.
Follow the color coding when installing, refer to Coupling Allocation .
The coupling must audibly engage when locking.
-- Pull on the coupling to make sure it is secure.
Version 6
Coupling with the with release buttons on the front and back -arrows- sides.
Disconnecting:
-- Press the coupling -1- in the -direction of the arrow- and hold it down.
-- Press the release buttons -arrows- and remove the coupling.
Follow the color coding when installing, refer to Coupling Allocation .
The coupling must audibly engage when locking.
-- Pull on the coupling to make sure it is secure.
Version 7
Coupling -1- with right and left unlock buttons -2-.
Disconnecting:
-- Press the coupling -1- in the -direction of the arrow A- and hold it down.
-- Push the release buttons -2- in the -direction of arrow B- and remove the coupling -1-.
Follow the color coding when installing, refer to Coupling Allocation .
The coupling must audibly engage when locking.
-- Pull on the coupling to make sure it is secure.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.