Turbo Making a Knocking Noise?

In this video I share some audio and visual of a turbo that is making a knocking noise. The particular part on the turbo that was making the noise is the vacuum controlled waste gate actuator. The actuator had a busted diaphragm and whenever vacuum was applied to it the actuator it would start to move but immediately would slap back to it's starting position as it could not hold vacuum.Show more

The vehicle in the video is 2017 Ford Escape with a 1.5L. However the Ford Escape is not the only vehicle out there that has a turbo equipped with a vacuum controlled waste gate. This information can potentially apply to many vehicles that have a turbo with a vacuum controlled waste gate actuator. (Always refer to your repair manual for information concerning "theory and operation " of any component on your vehicle. There could be differences. )

Note: in some cases a failure of the waste gate actuator diaphragm could be caused by the failure of another component, like a leaking vacuum pump. It is possible that vacuum pumps could leak oil into the diaphragm through the vacuum supply tube. Just FYI. Be sure your repair all root causes or repeat failure could occur.

Also, some waste gate actuators are serviceable separately from the turbo. That wasn't the case for the vehicle featured in the video.

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. Barbour'sAutoHelp makes no guaranty that the information provided is totally complete, syncronized and accurate. Verify everything using an appropriate repair manual. You can do it. Do it right and do it safely.