2003 6 LITER DIESEL.140,000 KM.After acceleration the turbo has a whiny noise...when the throttle is released.I have been told it could be the bushing....Any suggestions???

 

Could just be a leak. Is it very high pitch?

 

No,it is not a high pitch.

 

Did you just get the truck or have you had it for a while and just started hearing this noise? In general the 6.0 has a pretty loud turbo

 

Put the passenger side window down then shut the truck off while parked, if you hear the whiny sound after the engine stops then this is normal. The 2003 6.0 turbos make more noise then other year turbos. You will also hear a different sound with the hood open during shut down if you listen. Under the hood sound is the internal moving mass coming to a stop, and the exhaust side sound is the compressor wheel blades making the sound.

 

There is a TSB about this for that year. It has something about the pedestal. Very normal, mine does it to.