New to the diesel world and need help

[PRECISIONVISION]

I recently purchased a 2010 F250 6.4 and I notice at low rpm or light driving through my development I can hear what sounds like a knock. However when over 2000 rpm I don't hear it at all . Also It does not make that sound at idle. Truck has 93k on it. Has anyone else came across this ? Thanks for your help

 

[obs7.3]

Haven't heard this one yet, are you sure its coming from the engine and its not a suspension or drive train issue?

 

[01pwrstkr]

And is it like a engine knock? Or could it be a injector rattle sound?

"3 can keep a secret if 2 are dead"

 

[obs7.3]

Also, is it all stock? If not what's done to it?

 

[DWhite]

If you could catch a video of the sound it might help pin point it faster.