Checking holding pressure, vehicles with engine codes CJKA, CJKB — AUDI
Checking holding pressure, vehicles with engine codes CJKA, CJKB on Audi: 12 steps, engines AXA, BDL, BKK, CJKA.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: VW Transporter T5 (7H), VW Transporter T5 (7J), VW Transporter T6 (7E), VW Transporter T6 (7F)
- Renewed: fuel delivery unit
Don't miss
- Observe pressure drop on pressure gauge. After 10 minutes, pressure must not drop below 3.0 bar.
- Search for leak on engine side. Repeat holding pressure check. This time, close shut-off tap (A) to check whether leak actually is on engine side.
📋 Procedure
- Actuate fuel pump with final control diagnosis to build up fuel pressure.
- Read off fuel pressure on pressure gauge.
- End self-diagnosis and switch off ignition.
- Observe pressure drop on pressure gauge. After 10 minutes, pressure must not drop below 3.0 bar.
- Actuate fuel pump with final control diagnosis to build up fuel pressure.
- After pressure has built up, close shut-off tap (B) of pressure tester immediately. Lever is then at right angle to direction of flow. [Note: Search for leak on engine side. Repeat holding pressure check. This time, close shut-off tap (A) to check whether leak actually is on engine side.]
- Check fuel pipe to high-pressure pump for leaks.
- Renew high-pressure pump 24High-pressure pump ; Exploded view - high-pressure pump
- Check fuel line leading to flange for leaks.
- Open fuel delivery unit flange (1).
- Check that all hose connections are connected.
- Renew fuel delivery unit.
Other AUDI procedures
- Testing Y-thermostat – Audi 2.0 AXA
- Checking fuel tank breather, engine codes BDL, BKK
- Removing and installing fuel tank, engine codes AXA, BDL, BKK
- Removing and installing fuel tank, engine codes CJKA, CJKB
- Checking fuel delivery rate, vehicles with engine codes AXA, BDL, BKK
- 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 and installing camshaft timing chain · 29 torque figures
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.