Removing and installing intake manifold (bottom section) — AUDI

🧭 Before you start

Fits: Audi A3 (8L, 1996–2003)

• Renewed: gaskets

Don't miss

• Disregard (item 1).
• Block off intake ports in cylinder head with clean cloths.

🔧 Engine codes this applies to

📐 32 workshop diagrams for ALZ

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

📋 Procedure

1. Switch off ignition.
2. Press release tabs (arrow) and remove cover (1) over battery.
3. ⚠ Observe notes on procedure for disconnecting the battery 27. — Loosen nut (2) several turns and disconnect earth clamp from battery terminal. [Note: Disregard (item 1).]
4. Take off engine cover panel (arrows).
5. Detach electrical connector (1).

6. Disconnect hoses (2) and (3) at secondary air pump.
7. Detach secondary air pump (4) from bracket.
8. Unscrew bolts (1), (2) and (4) and nut (3) on secondary air pump bracket.
9. Move wiring clear (arrows) and remove the secondary air pump bracket.
10. Remove splash plate (arrows).
11. Unplug electrical connectors (3) and (4).
12. Disconnect vacuum hose (5) from fuel pressure regulator.
13. ⚠ The fuel system is pressurised. Before opening the system place a cloth around the connection. Then dissipate pressure by carefully unfastening the connection. — Mark fuel supply pipe (2) and fuel return pipe (1) and detach from fuel rail.
14. Unscrew bolts (1 ... 4) and (7) and nut (8).
15. Remove bolts (2) and (3).
16. Lever off the clips (1) and (4).
17. Press retainers slightly aside to release (arrows) and detach bottom section of intake manifold from top section.
18. Unclip wiring duct at bottom section of intake manifold and detach electrical connectors for injectors. [Note: Block off intake ports in cylinder head with clean cloths.] [Note: Renew gaskets and seals.]
19. Install secondary air pump .
20. Connect battery. Procedures required 27.

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