Whining noise coming from behind radiator

[LowCarolina]

First time diesel owner here. I have a question about a noise I'm now hearing from behind the radiator. I literally bought the truck Monday and just started hearing this noise recently. It changes in pitch and sometimes even stops for awhile. It doesn't fluctuate with RPM's so I know it's not the belt. Maybe the fuel cooler pump? Attached is a picture of where I think the noise is coming from. Any help on what to do would be great. Thank you in advance!

 

[powerstroked08]

Your lower intercooler boot doesn't look like its on all of the way. You could have a boost leak.

 

[6.0 Tech]

Whs i would fix the boot, and make sure your fuel cooler reservoir is full, this will cause a whining. If its not, use a vacuum filler to fill it, the air is what cause the whining.

 

[Layson]

Yep it has got to be that boot.

 

[LowCarolina]

Hey thanks guys I appreciate the help. So I've tightened up the boot and put more coolant in the fuel cooler, still has that whining noise. Think it must be air??


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[6.0 Tech]

There isnt a tear in the boot as well is there? That tends to cause more of a whooshing or squealing, but i guess could cause a whine. Could possibly be air too, was the fuel cooler tank low? Does the noise get worse turning or braking?

 

[LowCarolina]

Fuel cooler tank was a little low, but I filled it and still get the noise. And no, it doesn't get worse turning or breaking.


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[6.0 Tech]

Try pullng a vacuum on the fuel coole reservoir, see if that fixes it