High pitch whine raptor 350

[kmillercs]

I've got a new to me 2013 raptor 350 that has recently developed a whine on acceleration. Nothing at idle, but revving brings out a whine that you can hear after the exhaust bark, so on engine decel. Any thoughts where I might look first? I have listened all over the motor but can't quite tell where it is coming from. I appreciate the input.

 

[kmillercs]

I've got a new to me 2013 raptor 350 that has recently developed a whine on acceleration. Nothing at idle, but revving brings out a whine that you can hear after the exhaust bark, so on engine decel. Any thoughts where I might look first? I have listened all over the motor but can't quite tell where it is coming from. I appreciate the input.

Figured it out. Stator case bearing.