Rick's Free Auto Repair Advice

Fuel pressure test Ford

How to test fuel pressure on a Ford engine

These instruction pertain to Ford 4.6L 2-valve, 4.6L 3-valve, 5.4L 3-valve and 6.2L 2-valve engine. It shows where the fuel pressure test port is and how to test.

Locate the test port

On a 4.6L 3-valve, unscrew the Evaporative Emission purge valve bracket and move the bracket to the side. That will allow access to the fuel test port

test fuel pressure port Ford

Fuel pressure test port on Ford 4.6 engine

On a 5.4L 3-valve engine, remove the air intake resonator bolt. Then loosen the clamp. Rotate the resonator or remove it.

Remove the fuel pressure port cap and connect your fuel pressure gauge

test fuel pressure, fuel pressure port

Fuel pressure test port on 5.4 Ford

To test:

Cycle the key from OFF to RUN and wait 3-seconds for pressure to build. Repeat several key turns and note pressure. Then start the engine and note pressure.

Fuel pressure must be 55-60-psi with engine running at idle.

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Posted on by Rick Muscoplat

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