6.4 turbo noise? ?

[snorider99]

Hey I've got an 08 6.4 and when she's running around 30 psi boost there' aa squeal kinda noise coming from the truck and I can't seem to find where... All the intake/bost tubes seem to be in good condition so I'm wondering if an bodies have had this issue.. I'll try and post a sound clip of it.

 

[89xj]

Could be an up pipe leaking or a manifold leak. I had a manifold stud break and cause a leak. It was drivers side rear most bolt that broke. God the was hell getting it out.

 

[Csilva187]

Look for soot. Up-pipes and your crossover etc.

 

[snorider99]

No soot on anything

 

[ghohouston]

Could it be a belt/pulley issue, or are you pretty sure its turbo related?

 

[webb06]

If it just started then you may not have spot signs yet. Check the rearmost manifold bolts to see if any are broken off. You could also pressurize the intake side of things and see if you have any leaks.

Worst case scenario would be a failing turbo