Connect fuel pressure gauge between fuel filter and fuel rail. Open main valve and close drain valve. Locate fuel pump test connector in engine compartment. Test connector is terminal No. 22 of Data Link Connector, located behind battery, at left shock tower. See Fig 1 .

Fig 1: Locating Fuel Pump Test Connector (Aspire)
Courtesy of FORD MOTOR CO.
Connect jumper wire between fuel pump test terminals. Turn ignition on. If pump does not run, check fuel pump circuit. If possible, start engine. Measure and record fuel pressure. See FUEL PUMP PERFORMANCE table. Disconnect vacuum from pressure regulator. Turn engine off. Wait 5 minutes. Verify residual pressure is at least 21 psi (1.5 kg/cm² ).
Operate fuel pump by reconnecting jumper wire at fuel pump test connector. Check fuel pump performance. Pinch hose between pressure gauge and fuel filter. DO NOT pinch hose longer than necessary to measure pressure. See FUEL PUMP PERFORMANCE table. If pump does not meet specifications, inspect fuel pump circuit, fuel pump, fuel tank, and fuel filter.

FUEL PUMP PERFORMANCE

Application

Specification

Pressure

⁽¹⁾

Volume

⁽²⁾

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

⁽²⁾	Minimum volume in 10 seconds is 5.5 ounces (167 cc)

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Fuel Pressure Check