Fuel Pressure Regulator: Testing and Inspection

Pressure Regulator Check:

WARNING:
^ Release fuel pressure.
^ Keep sparks, cigarettes, and open flames away.

1. Disconnect negative battery terminal.
2. Connect pressure gauge between filter and main fuel hose as shown.
3. Connect battery, start engine, and run at idle.
4. Check line pressure:

LINE PRESSURE: 30 - 36 psi (210 - 250 kPa)

5. Disconnect and plug vacuum hose at regulator. Again check line pressure:

LINE PRESSURE: 39 - 45 psi (270 - 310 kPa)

6. If not as specified, replace regulator.