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Home >> Audi >> 1992 >> S4 2.2 P >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Diagnostic Procedures >> Fuel System >> Fuel Volume Check >> Fuel Pump Feed Rate
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Fuel Pump Feed Rate

  1. Release fuel line pressure. See FUEL PRESSURE RELEASE  .
  2. Remove fuse No. 17 (15-amp) from fuse holder. Connect remote control (VW 1348/3A) using adapter lead (VW 1348/3-2) and adapter cables from (VW 1594) between fuse No. 17, terminal No. 2, and battery positive (+) terminal. On vehicles with A/C, connect clip to remote starter aid connection in engine compartment. See Figure .
    3. NOTE: Place a cloth under and around area where hose will be connected to fuel line to catch residual fuel.
    Fig 1: Identifying Fuel Supply Line In Engine Compartment
    G00177381Courtesy of AUDI OF AMERICA, INC.
  3. Disconnect fuel supply line from fuel pump. See Fig 1 .
  4. Attach hose to fuel supply line, place other end of hose into a measuring glass. See Fig 2 .
  5. Operate remote control (VW 1348/3A) for 15 seconds (hold down button). Record amount of fuel deposited into measuring glass.
  6. Compare measured quantity with specified values for minimum feed rate in graph. See Fig 3 .Fuel delivery is dependent on battery voltage.
Fig 2: Identifying Fuel Feed Rate Test Set-up
G00177382Courtesy of AUDI OF AMERICA, INC.
Fig 3: Fuel Pump Feed Rate Specification Graph
G00177380Courtesy of AUDI OF AMERICA, INC.
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