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Fuel Pressure

  1. Release fuel system pressure. Remove fuel supply line at cold start injector and connect fuel pressure gauge. Disconnect vacuum hose from pressure regulator and connect hand vacuum pump to regulator. Turn ignition on and check pressure reading. See FUEL PRESSURE SPECIFICATIONS  table.
  2. Apply 16 in. Hg to pressure regulator. Reading should drop about 7 psi (0.5 kg/cm2 )). If pressure is too low, check fuel pump delivery rate. If pressure is too high, check fuel return line. If readings are still not as specified, replace regulator.
FUEL PRESSURE SPECIFICATIONS

Application psi (kg/cm2 ))
All Models 33-39 (2.3-2.8)