TorqFix

Checking camshaft timing control function: Audi A8 D2 2.8 (ACK, ALG, AMX, APR, …)

Step-by-step checking camshaft timing control function for the Audi A8 D2 2.8: 19 steps. What to remove, in what order, and what to check after.

Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.

19 steps 5 engine codes

🧭 Before you start

Fits: Audi A8 D2 (4D)

🔧 Engine codes this applies to

ACKALGAMXAPRAQD

📐 28 workshop diagrams for ACK

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

Checking camshaft timing control function — ACK · diagram 1
Checking camshaft timing control function — ACK · diagram 2
Checking camshaft timing control function — ACK · diagram 3
Checking camshaft timing control function — ACK · diagram 4
Checking camshaft timing control function — ACK · diagram 5
Checking camshaft timing control function — ACK · diagram 6
Checking camshaft timing control function — ACK · diagram 7
Checking camshaft timing control function — ACK · diagram 8
+ 20 more diagrams
🔒 28 workshop diagrams for this job Ask about your Audi ACK — free or sign up free to see the drawings

📋 Procedure

  1. ⚠ Always attach the testers and measuring instruments to the rear seat and have them operated from there by a second person.If testers and measuring instruments were to be operated from the front passenger's seat, the person sitting there could be injured by triggering of the front passenger's airbag in an accident. — Start engine and leave it idling.
  2. From list (1), select function "“08 - Reading measured value block”".
  3. Use keypad (2) to enter "“27”" for "“display group 027”" and confirm by touching Q key. [Note: Engine idling.]
  4. Check specifications in display zones (1), (3) and (4).
  5. Perform test drive.
ACK? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Check specifications in display zones (1), (3) and (4).
  2. Terminate function "“08 - Reading measured value block”" by touching ← key.
  3. Touch "“06 - End output”".
  4. Switch off ignition.
  5. Check camshaft adjustment solenoid valves .
  6. From list (1), select function "“08 - Reading measured value block”".
  7. Use keypad (2) to enter "“90”" for "“display group 090”" and confirm by touching Q key. [Note: Engine idling.]
  8. Check specifications in display zones (2), (3) and (4).
  9. Perform test drive.
  10. Check specifications in display zones (2), (3) and (4).
  11. Terminate function "“08 - Reading measured value block”" by touching ← key.
  12. Touch "“06 - End output”".
  13. Switch off ignition.
  14. Check camshaft adjustment solenoid valves .
Workshop diagrams

Ask TorqFix about your Audi ACK — it answers with the exact sequence for that engine and the workshop drawing for each step. First question is free after a 20-second sign-up, no card.

Ask about your Audi ACK — free → or sign up free to see the drawings

Other AUDI procedures

Who makes these pages, and how

TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.

The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.

Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.

Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com

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Workshop data on this page last updated 20 Sep 2026.