Fuel Delivery and Air Induction: Specifications

Connect the fuel pressure gauge to the fuel feed line.
Wrap a shop towel around the fuel pressure connection in order to absorb any fuel leakage that may occur when installing the fuel pressure gauge.

With the ignition switch "ON" and the fuel pump running, the fuel pressure indicated by the fuel pressure gauge should be.....
333 - 376 kpa (48 - 55 psi).

This pressure is controlled by the amount of pressure the spring inside the fuel pressure regulator can provide.