Engine Trouble?

[CameraGuy]

http://youtu.be/C1xXL17cCJQ


Here is a short video of my DJI Phantom motor. The video shows how it is performing, or not as is the case.


I took it apart, and applied some lube to it, but it didn't improve.


Is it the motor?
The Esc?
Something else?


All help would be greatly appreciated.


Thanks


Darren