Fuel Injector Line: Service and Repair

High Pressure Lines

Special tools, testers and auxiliary items required

• Torque Wrench 5-50 Nm (V.A.G 1331)

• Ratchet, Reversible (V.A.G 1331/1)

• Tool Insert, AF 17 (V.A.G 1331/6)

• Socket (T40055)

Procedure

• When using the high pressure line again, pay attention to the cylinder marking.

• The high pressure lines can be reused only after the following checks:

• Check the sealing cone on each high pressure line for deformation and cracks.

• The bores for the lines must not be deformed, narrowed or damaged.

• Do not use corroded lines again.

- Remove any dirt from the sealing cone on the fuel rail.

- Clean the fuel line and line connection with detergent and dry it with compressed air.

- 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.

• Tightening specifications: 25 Nm

- Use the (V.A.G 1331) and (V.A.G 1331/1) and (T40055) to tighten the high pressure lines to the injectors.






- Tighten the high pressure lines on the fuel rail using a (V.A.G 1331) with a (V.A.G 1331/6).






- Fuel system, performing leak test. Refer to => [ Fuel System, Checking for Leaks ] Fuel System, Checking For Leaks.