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Main Fuel Pump Volume Check: VANAGON

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  1. Remove the return line from the pressure regulator located in engine compartment left side. Push a piece of hose onto open connection of pressure regulator. Insert hose into a 1 qt. (1 liter) graduated container.
  2. Activate fuel pump for 30 seconds by removing fuel pump relay and attaching jumper wire between terminals No. 30 and No. 87. Fuel pump relay located left side of engine compartment in Black plastic box. Compare volume with specifications.
FUEL PUMP PERFORMANCE (AFC-DIGIFANT II)

Application/ Model Pressure psi (kg/cm2 ) Min. Vol. in 30 Sec. Pts. (L)
Cabriolet, Corrado 29-36 (2.0-2.5) 1.0 (.5)
Golf GL/GTI & Jetta 29-36 (2.0-2.5) 1.0 (.5)
Vanagon 33-39 (2.3-2.7) 1.0 (.5)
FUEL PUMP PERFORMANCE (CIS-E & CIS-MOTRONIC)

Application @ Voltage Min. Vol. in 30 Sec.: Pts. (L)
Fox
10 .8 (.375)
11 1.1 (.520)
12 1.4 (.675)
Jetta GLi
10 1.0 (.460)
11 1.3 (.620)
12 1.6 (.750)
Fig 1: Identifying Main Fuel Pump (Fox & Jetta GLi)
G121504Courtesy of VOLKSWAGEN UNITED STATES, INC.