Is this sound waste gate rattle?

[BMW2FORD]

Do you have a copy of the dealer repair order? The part numbers will be listed there to see.

 

[lurch]

Do you have a copy of the dealer repair order? The part numbers will be listed there to see.

The repair invoice has part numbers for everything but the phasers. For the phasers it just lists "KITPHASERSF150" as the part number.

 

[20Expy]

From that 2 sec. clip, it sounded exactly like (used to be ours) 2020 Expedition. For my case, the one time I caught it happening was actually when it was semi-warm, idling after a short drive (10 mins). I think I posted a thread with a clip of it too, will have to find it.

 

[20Expy]

Here is the thread: https://www.expeditionforum.com/threads/diesel-tap-tap-tap-on-idle.55549/

It actually happened twice for me, here is a second clip of it from the interior with windows down. This is after the short 10 mins drive and while idling semi-warm: https://drive.google.com/file/d/1N4XZbPbjDI5ijtX3EUV_LofUcFpOvgzn/view?usp=sharing

 

[sjwhiteley]

I have a similar sound. It does not come from the engine bay, but more under the car - sounds like an heat shield knocking - and can go on for a minute or less. Only when starting from cold, and at low idle. In this colder weather, typically will not hear it, as the engine starts at a high idle and maintains that to warm the vehicle. Once the vehicle is warm, it is not present.

I’ve tried adding springs to the turbos but it hasn’t changed anything (they may not be effective or incorrectly added). I do have the ‘long horse hair’ coming out of the tailpipe; don’t know if there’s a connection.