Bleeding fuel supply line leading to metering pump, vehicles with auxiliary heater — AUDI
Bleeding fuel supply line leading to metering pump, vehicles with auxiliary heater on Audi: 10 steps, engines CAGA, CAGB, CAHA, CAHB.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi Q5 (8R, 2008–2017)
- Opens: fuel
Don't miss
- Disregard (items 2, 3) and (arrow).
🔧 Engine codes this applies to
📋 Procedure
- Remove underbody trim (centre right) General body repairs, exterior66Underbody trim; Exploded view - underbody trim.
- Unscrew bolts (1, 3) and nuts (4) and remove bracket (2).
- Press release tab and disconnect fuel line (1) at metering pump for auxiliary heater. [Note: Disregard (items 2, 3) and (arrow).]
- Connect diesel extractorVAS 5226 to compressed air.
- Remove fuel supply line (2) from fuel tank at metering pump (1).
- Connect diesel extractorVAS 5226 to fuel supply line with adapter from hand vacuum pumpVAS 6213 and bleed fuel supply line by operating extractor briefly.
- Re-attach fuel supply line to metering pump.
- Switch auxiliary heating on and run at full load for approx. 10 minutes.
- Install bracket .
- Install underbody trim (centre right) General body repairs, exterior66Underbody trim; Exploded view - underbody trim.
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- Removing engine – Audi A8 D3 · 41 torque figures
- Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
- Installing engine – Audi A8 D4 · 36 torque figures
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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.