Checking fuel pump delivery rate - vehicles with 6-cylinder FSI engine — AUDI

🧭 Before you start

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

• Opens: fuel
• Special tools named: V.A.G 1318/12

Don't miss

• Open cut-off valve on pressure tester. Lever must point in direction of flow.
• From this point on do not move position of cut-off valve.
• 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. Remove rear seat bench 72.
2. Unscrew cover for flange (right-side) (arrows).
3. Unplug electrical connector (arrow) at flange (right side of vehicle).
4. Connect remote controlV.A.G 1348/3 A with adapter cableV.A.G 1348/3-3 to contact (1) using a test lead from auxiliary measuring setV.A.G 1594C.
5. Tape off 2nd connector contact of the adapter cableV.A.G 1348/3-3 with insulating tape (arrow) to prevent short circuits.

6. Connect contact (4) to the body (earth) using a test lead from auxiliary measuring setV.A.G 1594C.
7. Connect crocodile clip to positive (+) terminal of battery.
8. Remove filler cap from fuel filler neck.
9. Pull off engine cover panel (rear) (arrows).
10. ⚠ 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 line (arrow).
11. Connect K-Jetronic pressure testerV.A.G 1318 with adaptersV.A.G 1318/11 and V.A.G 1318/12 to fuel pipe.
12. Fit auxiliary hose (arrow) onto pressure tester and hold end of hose in measuring container.
13. Open cut-off valve on pressure tester. Lever must point in direction of flow.
14. Build up pressure in fuel system by pressing the remote control and slowly closing the cut-off valve on the pressure tester.
15. From this point on do not move position of cut-off valve.
16. Empty the measuring container.
17. Press remote control button for 15 seconds.
18. 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.]
19. Connect fuel line.

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