Screeching Noise From Broken Exhaust Stud, 2011-2016 F150 and 2015-2017 Expedition

Some 2011-2015 Ford F150s and 2015-2017 Ford Expeditions equipped with a 3.5L Ecoboost may develop a screeching noise upon heavy acceleration. This noise may be due to a broken exhaust stud on the rear of either the right or left, or both, exhaust manifolds. In this video I discus this issue. I describe how this noise is created by exhaust back pressure escaping through the multi-layered metal gasket that goes between the exhaust manifold and the head. The broken stud at the back of the manifold allows for this back pressure to escape through the gasket. I also, describe how this issue can be easily checked. I then go into a few methods for repairing this issue.

Note: This is not a "how to" video. This video is simply informational at best. Please refer to a reputable repair manual suited for the vehicle you are working on for repair information. Furthermore, this video does not go into how to safely lift and support a vehicle for inspection. This information must also be obtained from a reputable repair manual.

Of course, stud extraction will have to be performed to get the broken stud out. Usually the stud is broken in a way that you will be able to grab onto it with a stud remover to remove it. However, in some cases the stud will have to be extracted in another way.

Warning!! Be sure your vehicle is totally cool before inspecting or working around the exhaust system. Exhaust systems get extremely hot!

Here is a link to the Chris Whitney channel: https://www.youtube.com/@chriswhitney5092

DISCLAIMER
Barbour's Auto Help is not responsible for any damage or personal injury incurred in the process of performing any auto repairs done by you the viewer. Automotive repair is extremely dangerous. Repair your vehicle at your own risk. It is the viewers responsibility to verify all information and procedures as outlined in YOUR REPAIR MANUAL AND OWNERS MANUAL FOR YOUR VEHICLE. Owning and using a repair manual suited for your vehicle is essential for correctly and safely performing ANY repair to your vehicle. Always wear safety glasses and heed all instructions for use applicable to any piece of equipment you may use. Due to circumstances out of the control of Barbours Auto Help, Barbours Auto Help makes no guarantee that by the use of the information given in this video a quality repair will be made. Also, Barbour'sAutoHelp makes no guarantee that the information provided is totally complete, syncronized and accurate. Use the information found in this video at your own risk.