Injectors, removing and installing: Notes

NOTE:

Faulty injectors can cause the following malfunctions:
Engine runs rough
Diesel knock
Knocking in one or more cylinders
Engine overheating
Loss of power
Excessive black smoke
Increased fuel consumption
Excessive blue smoke when starting from cold

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

Special tools, testers and auxiliary items required

Fig 1: Torque Wrench V.A.G. 1331 (5 To 50 Nm)

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Torque wrench 5 to 50 Nm V.A.G 1331

Fig 2: Injector Line Wrench 3035

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Injector Line Wrench 3035