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Home >> Jeep >> 1991 >> Cherokee Limited >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Fuel System >> Capacity (Volume) Test (2.5L & 4.0L)
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Capacity (Volume) Test (2.5L & 4.0L)

  1. Relieve fuel pressure. See FUEL PRESSURE RELEASE (2 .5L & 4.0L). Disconnect fuel line on fuel rail. Place fuel line into a graduated container.
  2. Remove fuel pump relay (located in power distribution center). Using a jumper wire, connect terminals No. 30 and 87. See Figure. Volume of fuel should be 1.05 quarts (1.0L) in one minute. If fuel volume is not as specified, check for a plugged fuel filter or fuel pump inlet sock.
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