Audi Workshop Service and Repair Manuals

Checking fuel pump delivery rate - vehicles with 4-cylinder FSI engine Special tools and workshop equipment required

t  K-Jetronic pressure tester -V.A.G 1318- t  Adapter set -V.A.G 1318/10-12-

t  Remote control -V.A.G 1348/3A- for V.A.G 1348 with adapter cable -V.A.G 1348/3-2- t  Fuel-resistant measuring container Procedure l  Battery voltage at least 12.5 V l  Fuel filter OK l  Fuel tank at least 1/4 full. l  Ignition off.

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

–  Remove filler cap from fuel filler neck. –  Take off engine cover panel -arrows-.

WARNING 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 supply pipe -1- from pipe connection on engine.   Note Disregard items marked -2 ... 5-.

–  Connect K-Jetronic pressure tester -V.A.G 1318- with adapters -V.A.G 1318/11- and -V.A.G 1318/12- to fuel supply pipe. –  Fit auxiliary hose -arrow- onto pressure tester and hold end of hose in measuring container. –  Open cut-off valve on pressure tester. Lever must point in direction of flow. –  Build up pressure in fuel system by pressing the remote control and slowly closing the cut-off tap on the pressure gauge. l  Specification: 4 bar –  From this point on do not move position of cut-off valve. –  Empty the measuring container. –  Press remote control button for 15 seconds.

–  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. Assembly is carried out in the reverse order; note the following: –  Connect fuel line. Tightening torque

Component	Nm
Fuel line to fuel rail	28