Fuel Supply Line: Service and Repair

High Pressure Lines, Installing

Special tools, testers and auxiliary items required

• Torque Wrench (V.A.G 1331)

• 17 mm Socket (V.A.G 1331/6)

• SW 14 Socket, Open Ring (V.A.G 1331/8)

Procedure

• Do not change the angles of the fuel lines.

• High pressure line connections must not show any signs of damage.

• Never bend any of the fuel line mounting clamps.

• If a mounting clamp was bent, or if the fuel line is being replaced, then the mounting clamps must also be replaced.

- Coat the threads on the union nut with fuel.

- Tighten the high pressure line union nuts by hand, making sure they are seated without tension.

- Use a Torque Wrench (V.A.G 1331) with the 14 mm Socket, Open Ring (V.A.G 1331/8) to tighten the high pressure lines.





- Use a Torque Wrench (V.A.G 1331) with 17 mm Socket (V.A.G 1331/6) to tighten the high pressure lines.





• Tightening specification: 25 Nm

- Tighten the clamps only after the high pressure lines are tightened.

- Perform a leak test on the fuel system.