Nolan

I already did that found nothing and so did 2 Mack dealerships.  Looking to see if anyone has had a common problem or some little trick to solve such a pain of a noise.

Already replaced the hoses on the inlet side and I’m not loosing boost pressure. Still squeals 

Hi everyone, in need for some guidance/ or help.

I have a 2004 Mack ch613 and I am having a squealing noise from the turbo area under the hood, it only does it under a load when it’s hot. It won’t do it cold! It’s been doing it for a couple months now the motor was just rebuilt with new turbo. I replaced the Intercooler and all the intake boots and I have no intake leaks. I’m thinking it’s exhaust but I’m not sure where to start, and help is much appreciated, I also have a video of the sound it makes.

thanks