Ford Fuel Tube Is Knocking

If there's a knocking or tapping noise heard in the fuel feed tube that attaches to the high pressure fuel pump on the engine on a Ford Edge, the culprit may be a loose check valve in the tube.

Information courtesy of Mitchell 1

Mike Mavrigian

July 20, 2022

2 min read

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Some 2015-2016 Ford Edge vehicles equipped with a 2.7L EcoBoost engine and built on Oct. 29, 2015, through April 1, 2016, may exhibit a knocking/tapping noise that can be heard in the fuel feed tube that attaches to the high pressure fuel pump on the engine.

Inspect the oetiker clamp to see if the clamp can be rotated by hand.

This may be due to a loose check valve located in the fuel feed tube.

Inspect the clamp on the fuel feed tube. Can the clamp be rotated by hand on the feed tube? If yes, replace the fuel feed tube and vapor tube.
Release the fuel system pressure.
Disconnect the battery ground cable.
If equipped, remove the two retainers and remove the engine appearance cover.
Remove the right hand air cleaner outlet pipe.
If equipped remove the retainers and the floor pan underbody shields.
Remove the retainers and the front crossmember brace.
Disconnect the fuel feed tube-to-fuel tank and vapor tube quick release couplings.
Remove and discard the fuel feed tube, vapor tube and eight mounting brackets. It is not necessary to remove the two brake lines.
On the new fuel/brake line bundle, remove and discard the two brake lines from the fuel/brake line bundle.
Install the new fuel feed tube, vapor tube and eight mounting brackets.
Continue with re-assembly.

Remove the front crossmember brace. Torque to 33 ft-lb during assembly.

About the Author

Information courtesy of Mitchell 1

Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.

Mike Mavrigian

Motor Age Editor

Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.