Document: Idle running issue, V8 TDI 3.3L AKF engine (Solution)

V8 TDI engine, 3.3L AKF type.
Up to reference number 4D 2N 000 808.
Rough idle, engine shakes at idle.

Cause: Faulty injectors.

Procedure:
Reading measurement data blocks 13 and 14 (idle state).
regulation) while idling. If one or more cylinders are...
einem Wert von +2,49 mg/H liegen, kann davon ausgegangen werden, dass ein Injektor defekt ist. Der defekte Injektor kann andere Injektoren beeinflussen, die in der Zündreihenfolge vor ihm liegen. Das bedeutet, das selbst wenn mehrere Injektoren bei +2,49 mg/H stehen nur der defekt ist, der in der Zündfolge der letzte ist. Ddefective
The injector can also be identified by slightly increasing the throttle while reading the measured values (engine speed maximum 1500 rpm). Then, one by one, all cylinders will show a value of +2.49 mg/H, except for one.
This is the faulty injector.
All 8 injectors need to be replaced because there is a risk of damage to the other injectors later on.
It must be noted that the camshaft must be in a specific mounting position. The injector bore should be cleaned with a lint-free cloth, and care must be taken to ensure that there are no residues on the bottom of the injector bore.

Sure, here is the translation of the text from German to English:

"Note:"
If injectors with index "H" were already installed in the vehicle as part of a previous repair, only the defective injector needs to be replaced.