Fuel Pressure Regulator Inspection
- Disconnect negative battery cable. Release fuel pressure. See FUEL PRESSURE RELEASE . Install fuel pressure gauge in fuel supply line. Reconnect negative battery cable.
- Start and operate engine at idle. Ensure vacuum is available to pressure regulator. Observe fuel pressure with vacuum hose connected and disconnected at fuel pressure regulator. For fuel pressure specifications, see FUEL SYSTEM in SERVICE & ADJUSTMENT SPECIFICATIONS article. If fuel pressure is not as specified, replace fuel pressure regulator.