Checking combination valves for secondary air system for correct operation and leakage — AUDI
Checking combination valves for secondary air system for correct operation and leakage on Audi: 13 steps, engines AJK, APB, ARE, ASJ.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: platform code 42
Don't miss
- Blow lightly into test hose with your mouth (do not use compressed air).
🔧 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
- Fit protective covers on bodywork .
- R8 Spyder: Remove service flap 55.
- Remove wide air cleaner housing/both air cleaner housings .
- Detach vacuum hose (2) from combination valve for secondary air system.
- Press release tabs and disconnect secondary air hose (4). [Note: The illustration shows the left-side combination valve for secondary air system.For better accessibility on R8 Spyder vehicles, detach hose at secondary air pump and not at secondary air combination valve.Disregard (items 1, 3, 5).]
- 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 test 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: left-side , right-side .
- Install air cleaner housing .
- Install service flap 55.
- Install engine compartment trim panels 53.
Ask TorqFix about your Audi AJK — it answers with the exact sequence for that engine and the workshop drawing for each step. First question is free after a 20-second sign-up, no card.
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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.