HB2 - Check Fuel Pressure

WARNING: The fuel system will remain pressurized when engine is not running. To prevent injury or fire, use caution when working on the fuel system.

- Key "OFF".

- Install fuel pressure gauge.

- Verify that manifold vacuum is connected to the fuel pressure regulator.

If engine will start:

- Start and run engine at idle. Note fuel pressure.

- While under load, increase engine speed to 2500 rpm's and maintain for one minute (test drive). Note fuel pressure.

If engine will not start:

- Cycle the key off and on several times. Note fuel pressure gauge.

Specification
Key on engine running 210-310 kPa (30-45 psi)
Key on engine off 240-280 kPa (35-40 psi)

NOTE: Maximum fuel pressure is obtained at Wide Open Throttle (WOT) or with the vacuum hose removed from the fuel pressure regulator.

- Is fuel pressure within specification for the engine being tested?

Yes -- Go to HB3. HB3 - Check System's Ability to Hold Fuel Pressure

No -- Refer to Fuel Delivery and Air Induction/Testing and Inspection.