With CONSULT Scan Tool

WARNING: Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.

Fuel Pressure Release With CONSULT Scan Tool:

1. Turn ignition switch "ON".
2. Perform "FUEL PRESSURE RELEASE" in "WORK SUPPORT" mode.
3. Start Engine.
4. After engine stalls, crank it two or three times to release all fuel pressure.
4. Turn ignition switch off.

Fuel Gauge Connection:

Disconnect fuel line from fuel filter and connect a suitable pressure gauge as shown.
5. Start engine and check for fuel leaks. Read the indication of fuel pressure gauge.

At Idle: With fuel pressure regulator valve vacuum hose CONNECTED.
Approximately 245 kPa (36 psi)
With fuel pressure regulator valve vacuum hose DISCONNECTED.
Approximately 294 kPa (43 psi)

6. Stop engine and disconnect fuel pressure regulator vacuum hose from intake manifold.
7. Plug intake manifold with a rubber cap.
8. Connect variable vacuum source to fuel pressure regulator.






9. Start engine and read indication of fuel pressure gauge as vacuum is changed.
Fuel pressure should decrease as vacuum increases. If fuel pressure does not respond to the application of vacuum, check fuel return line for restrictions prior to replacing fuel pressure regulator. If fuel pressure stays constantly low, check fuel filter for restrictions.

CAUTION:
^ When reconnecting fuel line, always use new clamps.
^ Make sure that clamp screw does not contact adjacent parts.
^ Use a torque driver to tighten clamps.
^ Use a Pressure Gauge to check fuel pressure.
^ Do not perform fuel pressure check while fuel pressure regulator control system is operating; otherwise, fuel pressure gauge might indicate incorrect reading.