Volkswagen Workshop Service and Repair Manuals

Special tools, testers and auxiliary items

• ◆ Ring spanner 3035
• ◆ Torque wrench V.A.G 1331 (5...50 Nm)
• ◆ Torque wrench V.A.G 1332 (40...200 Nm)

Note:

Defective injectors cause the following faults:

• ◆ Misfiring
• ◆ Knocking in one or more cylinders
• ◆ Engine over-heating
• ◆ Loss of power
• ◆ Excessive black exhaust smoke
• ◆ Higher fuel consumption
• ◆ Excessive blue smoke when starting from cold

Defective injectors can be located by loosening the high pressure pipe union on each injector in turn with the engine running at a fast idling speed. If engine speed remains constant after loosening a pipe union, this indicates a defective injector.

Removing

• ‒ → Remove injection pipes with a slotted ring spanner 3035.

Note:

Always remove pipe set complete. Do not alter pipe shape.

• ‒ Remove injectors with 27 mm socket.

Installing

Note:

Always renew heat shield between cylinder head and injectors.

→ Installation position of heat shield:
Arrow points towards cylinder head.

Tightening torques:
     Injection pipes = 25 Nm
     Injectors = 70 Nm

Note:

Always renew heat shield between cylinder head and injectors.