Fuel Pump Delivery Flow
- 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 graduated container of about 2 quarts.
- Activate fuel pump by turning ignition on. Run fuel pump for 30 seconds. Check volume of fuel flow and fuel pressure drop. Minimum allowed volume is 1 quart (.91 l), and maximum allowed fuel pressure drop is 1.45-2.90 psi (.10-.20 kg/cm2 ). If fuel volume or pressure drop does not meet specification, replace fuel pressure regulator.