Checking combination valve for correct operation and leaks — AUDI
Checking combination valve for correct operation and leaks on Audi: 12 steps, engines CAKA, CCBA, CFSA, CGWC.
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)
Don't miss
- The illustration shows the combination valve for secondary air system (left-side).
- Disregard (item 1).
- Blow lightly into secondary air hose with your mouth (do not use compressed air).
📋 Procedure
- Remove body brace Running gear, axles, steering40Suspension strut, upper links; Removing and installing body brace.
- Move fuel hose (1) and hose (2) leading to activated charcoal filter clear at air pipe.
- Detach vacuum hose (3) from connection on air pipe.
- Remove air pipe. To do so, release hose clip (4) and clamps (arrows). [Note: The illustration shows the combination valve for secondary air system (left-side).]
- Remove bolts (3) (left and right) for secondary air system hose.
- Detach vacuum hose (2) from combination valve for secondary air system. [Note: Disregard (item 1).]
- Connect hand vacuum pumpVAS 6213 to vacuum connection (1) on relevant combination valve for secondary air system.
- Connect a suitable test hose (2) onto combination valve for secondary air system.
- Blow lightly into secondary air hose with your mouth (do not use compressed air).
- Operate hand vacuum pump to produce a vacuum.
- Renew combination valve for secondary air system if valve does not react as described:
- Install body brace Running gear, axles, steering40Suspension strut, upper links; Removing and installing body brace.
Other AUDI procedures
- Removing and installing camshaft timing chain · 29 torque figures
- Securing engine to engine and gearbox support · 18 torque figures
- Exploded view - timing chain cover · 18 torque figures
- Exploded view - crankshaft · 13 torque figures
- Removing and installing timing chain cover (bottom) – Audi · 7 torque figures
- Removing and installing toothed belt – Audi · 56 torque figures
- 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
- Removing cylinder head - vehicles up to approx. 05.2005
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.