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Home >> Audi >> 1991 >> 100 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Fuel System (2.2L) >> Fuel Pressure (2.2L) >> Main Pump Delivery Volume (2.2L)

Main Pump Delivery Volume (2.2L)

  1. Check transfer pump (if equipped) and fuel filter. Disconnect fuel return line and place open end in measuring container. Activate fuel pump with jumper switch. Check fuel pump delivery volume for 30-second period.
  2. Minimum delivery volume is .71 qt. (.68L) in 30 seconds. With engine off and fuel pump activated with jumper switch, measure voltage at fuel pump. Voltage should be 11.4 volts.
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