Checking fuel pump delivery rate - vehicles with 1.8 ltr. turbo engine — AUDI

🧭 Before you start

Fits: Audi A4 Cabriolet B6/B7 (8H), Audi A4 B6/B7 (8E)

• Special tools named: V.A.G 1348, V.A.G 1318/17

Don't miss

• Disregard (item 2).
• Voltage at fuel pump with engine stationary and pump running is approx. 2 volts less than battery voltage.

🔧 Engine codes this applies to

📐 52 workshop diagrams for ALT

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

📋 Procedure

1. Open fuse box cover on left-hand side of instrument panel.
2. Take out fuse in fuse holder S228 (left row, 5th large fuse from the top).
3. Connect remote controlV.A.G 1348/3A for V.A.G 1348 with adapter cableV.A.G 1348/3-2 to right-hand terminal on socket of fuse S228.
4. Connect crocodile clip to positive (+) terminal of battery.
5. Remove filler cap from fuel filler neck.

6. Remove rear seat bench 72.
7. Unscrew cover for flange (right-side) (arrows).
8. ⚠ The fuel system is pressurised. Before opening the system place a clean cloth around the connection. Then release pressure by carefully loosening the connection. — Disconnect fuel return line (1) from flange (right side of vehicle) by pressing release tab. [Note: Disregard (item 2).]
9. Fit adapter V.A.G 1318/17-1 onto disconnected fuel line and hold adapter hose in measuring container.
10. Press remote control button for 15 seconds.
11. Compare amount of fuel delivered with minimum delivery shown in diagram (cm3/15 sec.). [Note: Voltage at fuel pump with engine stationary and pump running is approx. 2 volts less than battery voltage.]
12. Connect fuel return line.
13. Install rear seat bench 72.

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