Testing fuel pump delivery rate — AUDI

ABZ ACK AEJ AEM AEW AGE AGH AHC AKB AKC AKD AKG AKH AKJ ALG AMX APR AQD AQF AQG AQH ARU AUW AUX AVN AVP AYS AZC BCS
V.A.G 1348/3A with V.A.G 1348/3-2
V.A.G 1318/10
V.A.G 1318/14
Measuring container (fuel-resistant)

Requirements for test:

Battery voltage not less than 12.7 V
Fuel filter OK
Ignition switched off

Test sequence

Detach floor covering at front of passenger's footwell.
Unscrew knurled screw -1-.
Pull trim -2- out of clip -3- towards the rear.
Detach trim.

Pull fuse No. S1 out of fuse carrier ST4 in fuse box.

ST4 - blue fuse carrier

Connect remote control V.A.G 1348/3A with adapter cable V.A.G 1348/3-2 to lower terminal of socket for fuse No. S1 in fuse carrier ST4 -arrow 1-.
Connect clamp to positive battery supply (e.g. socket of 60 A fuse -arrow 2- at top of fuse box).

Remove engine cover panel.

Warning
Fuel system is under pressure. Before opening the system place a cloth around the connection. Then release pressure by carefully loosening the connection.
Vehicles with 6-cylinder engine and screw connection on return hose:

Unscrew fuel return hose at fuel pressure regulator.
Attach adapter V.A.G 1318/14 and V.A.G 1318/10 at fuel pressure regulator.
Connect extension hose -arrow- and hold end of hose in measuring container.

Vehicles with 8-cylinder engine and screw connection on return hose:

Unscrew fuel return hose at fuel pressure regulator.
Screw on extension hose (Part No. 8A0 201 351 A) and hold end of hose in measuring container.

Vehicles with push-fit connection on return hose:

Pull off fuel return hose at connection on fuel distribution pipe.
Connect extension hose -arrow- to fuel distribution pipe and hold end of hose in measuring container.

All models

Operate remote control for 15 seconds (keep button pressed).
Compare the quantity of fuel delivered with specification.

*)
Minimum delivery cm3/15 seconds

**)
Voltage at fuel pump with engine stopped and pump running (approx. 2 volts less than battery voltage).

Vehicles with screw connection on return hose:

Connect return hose and tighten to 23 Nm.

Vehicles with push-fit connection on return hose:

Attach return hose and secure with new hose clamp.

Note:

Secure all hose connections with the correct hose clips (same as original equipment)

=> Parts catalogue