Removing and installing injectors with fuel rail: Audi A6 C5 2.7 (AJK, ARE, AZA, BES)

🧭 Before you start

Fits: Audi A6 C5 (4B)

• Renewed: hose clips

Don't miss

• The items listed below refer to the diagram of components .
• Detach charge pressure control solenoid valve (1) from fuel rail. The hoses must remain connected.

🔧 Engine codes this applies to

📐 20 workshop diagrams for AJK

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

📋 Procedure

1. Unfasten screw connections (arrows) and detach engine cover panels (A ... C).
2. Unscrew hose connections and bolt connections on the air duct at the points indicated by (arrows) and remove the air duct. [Note: The items listed below refer to the diagram of components .]
3. Detach charge pressure control solenoid valve (1) from fuel rail. The hoses must remain connected.
4. Unplug electrical connector at solenoid valve 1 for activated charcoal filter system (2).
5. Unplug electrical connector at turbocharger air recirculation valve (3).

6. Open hose clips (4) on air recirculation valve and detach hoses.
7. Open hose clip on fuel pressure regulator (5) and detach hose.
8. Unplug electrical connectors for injectors (6) on both cylinder banks.
9. Open hose clip and detach vacuum hose (7).
10. Open hose clips and detach air intake hoses (8) going to turbochargers.
11. Open hose clip and detach hose (9).
12. ⚠ The fuel system is pressurised. Before opening the system place a cloth around the connection. Then dissipate pressure in fuel supply pipe by carefully slackening union nut. — Then tighten the screw connection again.
13. Unbolt fuel rail from intake manifold (arrows).
14. Lift fuel rail off intake manifold together with injectors and support the fuel rail. [Note: After lifting off fuel rail, check that the injectors are properly secured to fuel rail.It is possible that some of the injectors will become detached from the fuel rail and remain in the intake manifold when the fuel rail is removed. If this happens, fit the injectors back onto the fuel rail .] [Note: Renew hose clips.Secure all hose connections with the correct type of hose clips (same as original equipment) Parts catalogue.]

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