Checking delivery pressure of tandem pump: Audi 2.0 TDI (BDJ, BMM, BST)
Step-by-step checking delivery pressure of tandem pump for the Audi 2.0 TDI: 14 steps. What to remove, in what order, and what to check after.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: VW Caddy III (2K, 2004–2015)
- Renewed: o-rings for unit injectors, tandem pump, seal
Don't miss
- After removing pressure gauge, tighten sealing. Always renew seal.
📋 Procedure
- Unscrew plug (arrow).
- Connect tandem pump testerVAS 5187 as shown.
- Start engine and run at idling speed.
- Connect .
- Select diagnostic function Read measured value block in Engine electronics.
- Enter display group 1 using number block.
- Read off idling speed in display field 1.
- Increase speed to 4000 rpm.
- Check displayed pressure on pressure gauge.
- Using a hose clamp, clamp off return line between fuel filter and tandem pump.
- Increase speed to 4000 rpm.
- Check displayed pressure on pressure gauge.
- Renew O-rings for unit injectors.
- Renew tandem pump . [Note: After removing pressure gauge, tighten sealing. Always renew seal.]
Other AUDI procedures
- Removing and installing fuel delivery unit, front-wheel drive, engine codes CAYD, CAYE, CFHC, CFHE, CFHF, CLCA, CFJA
- Checking voltage supply and current consumption of fuel system pressurisation pump G6 engine codes BJB, BLS, BSU, BDJ, BST, BMM
- Emptying fuel tank, front-wheel drive, engine codes BJB, BLS, BSU, BDJ, BST, BMM
- Removing and installing prewiring for unit injectors
- Removing and installing fuel tank, four-wheel drive, engine codes BJB, BLS, BSU
- 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.