Unable to track down this sound.

[nightdragon]

Little back ground: Truck runs great, no problems starting or stalling, doesn't smoke more then 20-30 seconds on a cold start up.
I have replace the alt. (died), harmonic balancer and pulley.

The noise I'm hearing has a hollow sound, seems to be coming from the front of the motor twords the power steering pump, also seem to be getting some vibration on the power steering pump mounting bracket but no were else on the motor, this is driving me crazy :mad2:

I am post a video on youtube (link below) hopefully someone with a trained ear can possibly point me in the right general direction.

http://www.youtube.com/watch?v=2Xv22V9hfyg

Thanks in advance,
Sean

 

[3500GMC]

I cannot tell. The audio is terrible.

Try and borrow a better camera.

 

[ak diesel driver]

take off the belt and see if it sounds the same

 

[racer55]

Strange sounds like a dry bearing being spun by hand?

 

[bison]

Bad motor mount maybe?
Sticky intake valve makes a hollow sound too

 

[racer55]

Perhaps an oil cooler line rattling?

 

[Big T]

I was able to diagnose early stage failure of the idler pulley on my wife's Mercedes over the cell phone this AM, but your truck sounds pretty normal on this audio.

 

[jmiller]

take off the belt and see if it sounds the same

2x

See if you can isolate the noise. Take the belt off and run it for a short period, see if the noise goes away.

Put your hands on every pulley and give them a spin, see how the feel.

I have had a horrible time with alternator bearings.

 

[bison]

Check if the PS pump bracket lost the bolt on Dr side under the exh manifold(feel only,unless you have eyes on a stalk)