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Home >> Saab >> 1995 >> 900 SE, 4D Hatchback, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (Engine Controls - Basic Testing) >> Fuel System >> Fuel Pressure >> Fuel Pump Flow

Fuel Pump Flow

WARNING: This page is about a different car, the 1996 Saab 900. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition off. Disconnect fuel return line at pressure regulator. Connect a section of test hose to return line at pressure regulator. Place other end of test hose in 2-quart (approximate) graduated container.
  2. Activate fuel pump by turning ignition on. Run fuel pump for 30 seconds. Measure volume of fuel flow and fuel pressure drop. Minimum acceptable volume is 1.9 pts. (0.9L); maximum allowed fuel pressure drop is 2.8 psi (0.2 kg/cm2 ). If fuel volume or pressure drop does not meet specification, replace fuel pressure regulator.
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