Fuel Injectors, Removing and Installing

Fuel Injectors, Removing and Installing

Special tools







- VAG 1331 Torque wrench (5 to 50 Nm) or equivalent







- 3035 Injector line wrench


NOTE:
Faulty injectors can cause the following malfunctions:
- 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 with cold engine


NOTE: Faulty injectors can be located by loosening the high pressure line connection on each injector in turn with the engine running at a fast idle. If engine speed remains constant after loosening a line connection, this would indicate a faulty injector.


Fuel injectors, removing
- Remove injection lines using 3035 tubing wrench.


NOTE: Always remove fuel lines in a complete set. Do not alter line shape.


- Remove mounting nut, retainer and pull out fuel injector.

Fuel injectors, installing


NOTE: Always replace heat shield between cylinder head and fuel injectors.


- Insert fuel injector.
- Make sure mount is seated correctly in cylinder head and install retainer.

Tightening torques:
- Injection lines = 25 Nm (18 ft lb)
- Retainer screw = 20 Nm (15 ft lb)

- Erase DTC memory and set the readiness code.