Removing and installing high-pressure pump (engine code letters BAG) — AUDI

🧭 Before you start

Fits: Audi A3 (8P, 2003–2012)

• Renewed: o-ring for high-pressure pump

Don't miss

• Fuel supply line is pressurised. Before loosening fuel connections always release fuel pressure prior to carrying out any work . — Remove engine cover panel .
• Use a cloth to catch escaping fuel.
• Lubricate sleeve of high-pressure pump with clean engine oil.Always renew O-ring for high-pressure pump.

🔧 Engine codes this applies to

🔩 Torque settings

Values can differ between engine variants — check the code stamped on your block.

ℹ️ Always cross-check the exact figure against your vehicle's factory manual before final tightening — a wrong torque can damage the engine. These values are extracted from workshop data and may not cover every variant or revision.

📋 Procedure

1. ⚠ Fuel supply line is pressurised. Before loosening fuel connections always release fuel pressure prior to carrying out any work . — Remove engine cover panel .
2. Remove connecting pipe (6).
3. Loosen union nut (3).
4. Unscrew banjo bolts (1), (2) and (5). [Note: Use a cloth to catch escaping fuel.]
5. Detach connector (1).

6. Detach fuel line connections (3) and (4) from high-pressure pump (5).
7. Remove securing bolts (2).
8. Detach high-pressure pump (5) from camshaft housing. [Note: Lubricate sleeve of high-pressure pump with clean engine oil.Always renew O-ring for high-pressure pump.]
9. Fit high-pressure pump (5) with new, oiled O-ring in camshaft housing.
10. Tighten securing bolts (2) on high-pressure pump (5) to 10 Nm. — 10 Nm (7.4 lb-ft)
11. Refit connector (1).
12. Fit fuel lines (3) and (4) onto high-pressure pump.
13. Tighten banjo bolts (1) and (2) to 15 Nm — 15 Nm (11 lb-ft)
14. Install high pressure pipe (4) as follows:
15. Install connecting pipe (6).

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