Fuel Pressure Regulator Test

WARNING: Do not smoke during the test. Keep open flames away from your work area.


1. Attach a fuel pressure gauge to the service port of the fuel filter. Pressure should be 275-324 kPa (40-47 psi) with the fuel pressure regulator vacuum hose disconnected and pinched.
2. Reconnect the vacuum hose to the fuel pressure regulator.

- If the fuel pressure did not drop, replace the fuel pressure regulator.


3. Check that the fuel pressure rises when the vacuum hose from the fuel pressure regulator is disconnected again.

- If the fuel pressure did not rise, replace the fuel pressure regulator.