Intake manifold (bottom section), fuel rail, injector - exploded view — AUDI
Intake manifold (bottom section), fuel rail, injector - exploded view on Audi: 4 steps, 3 torque figures, engines CJTB, CJTC, CJWB, CJWC.
This page is the exploded view of the lower intake manifold, fuel rail and injectors on the Audi Q7 2005–2015 (4L) with the engine codes listed below, and it is really a torque and safety reference rather than a step-by-step job. Before any fitting on the high-pressure side is opened, the fuel pressure must be reduced to a residual level, because the system runs at extremely high pressure. The manifold is pulled down in stages and in diagonal sequence to a final 9 Nm, and other bolts in the assembly go to 10 Nm in diagonal sequence. One fastening group is tightened in 3 stages. The care here is in the sequence: work evenly and diagonally so the manifold and rail seat without distortion.
🧭 Before you start
Use the exploded view to identify the parts and their tightening values. Relieve high-pressure fuel to residual pressure before opening anything. Tighten the manifold bolts and nuts in stages and in diagonal sequence to 9 Nm, the bolts specified at 10 Nm diagonally, and the group shown for staged tightening in 3 stages as listed.
Fits: Audi Q7 (4L, 2005–2015)
Don't miss
- Reduce high-pressure fuel to residual pressure before opening any fitting.
- Tighten the manifold bolts and nuts in stages, diagonally, to a final 9 Nm.
- Bolts shown at 10 Nm also go in diagonal sequence.
- Follow the 3-stage sequence where the view specifies it.
- Check for fuel leaks with the engine running before refitting covers.
Written for this job from the workshop steps below · TorqFix editorial.
🔩 Torque settings
Values can differ between engine variants — check the code stamped on your block.
| Torque | Fastener / step |
|---|---|
| 10 Nm (7.4 lb-ft) | ⚠ The fuel system operates at extremely high pressure |
| 10 Nm (7.4 lb-ft) | Tighten bolts (arrows) in diagonal sequence |
| 9 Nm (6.6 lb-ft) | Tighten bolts and nuts (arrows) in stages and in diagonal sequence |
ℹ️ Always cross-check the exact figure against your vehicle's factory manual before final tightening — a wrong torque can damage the engine. These values are extracted from workshop data and may not cover every variant or revision.
📋 Procedure
- ⚠ The fuel system operates at extremely high pressure. This can cause injury.The fuel pressure in the high-pressure section of the injection system must be reduced to a residual pressure prior to opening the system. — Tighten bolts (arrows) to 10 Nm. — 10 Nm (7.4 lb-ft)
- Tighten bolts and nuts (arrows) in stages and in diagonal sequence; final torque 9 Nm. — 9 Nm (6.6 lb-ft)
- Tighten bolts (arrows) in diagonal sequence to 10 Nm. — 10 Nm (7.4 lb-ft)
- Tighten bolts in 3 stages as follows:
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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
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.