All Other Models (EEC-V)

Release fuel pressure. Install fuel pressure gauge. Turn ignition on and read fuel pressure. Start engine and read fuel pressure. Compare fuel pressure reading on fuel pressure gauge with fuel pump specifications. For fuel pressure specifications, see FUEL PRESSURE SPECIFICATIONS article.
If fuel pressure is not within specifications, check fuel pressure regulator. With engine running, connect hand vacuum pump and apply vacuum to regulator.
Ensure fuel pressure changes as vacuum at regulator is increased and decreased. If no pressure change occurs, replace regulator and recheck system. For additional testing information, see FUEL SYSTEM in the SYSTEM/COMPONENT TESTS - 5.8L EEC-IV article.

Fig 1: Identifying Fuel Pump Self-Test Connector

Courtesy of FORD MOTOR CO.

FUEL PUMP PERFORMANCE

Application

Specification

Pressure

⁽¹⁾

Volume

⁽²⁾

⁽¹⁾	For fuel pressure specifications, see FUEL PRESSURE SPECIFICATIONS article.

⁽²⁾	Volume is one pt. (.5L) in 30 seconds.