Removing and installing injector: Audi 2.8 TDI (AUH, BCQ)

🧭 Before you start

Fits: platform code 2DA

• Special tools named: 3035
• Renewed: o-ring

Don't miss

• When loosening injection pipes (on injector side), counterhold at injector union.
• Ensure that O-ring is correctly positioned on injector (A). If O-ring is seated in injector groove (B), injector cannot be inserted into cylinder head.
• Ensure that injector pipes are not tightened under tension.

🔧 Engine codes this applies to

📋 Procedure

1. ⚠ Fuel system is under pressure! Wear eye protection and protective clothing to avoid injuries and skin contact. Before opening the system place a cloth around the connection. Then dissipate pressure by carefully unfastening the connection. — Pull 2-fold connector (1) off injector (3).
2. Pull off fuel return line (2).
3. Remove injection pipes (6) with slotted ring spanner 3035. [Note: When loosening injection pipes (on injector side), counterhold at injector union.]
4. Unscrew securing bolt (4) and remove retainer (5).
5. Pull out injector (3).

6. Screw fastening bolt for retainer back into threaded hole.
7. Position lever T40017 onto fastening bolt and pull injector out.
8. Renew O-ring and heat shield seal between cylinder head and injector. [Note: Ensure that O-ring is correctly positioned on injector (A). If O-ring is seated in injector groove (B), injector cannot be inserted into cylinder head.]
9. Ensure that injector pipes are not tightened under tension.
10. First screw in retainer bolts hand-tight so that injector can still be turned.
11. Now tighten union nuts on injector pipes hand-tight.
12. Now tighten retainer bolts and finally injector pipe union nuts to specified torque.

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