Head gaskets or y and up pipe leak
 

i have a 2005 f350..89000 miles...new egr, oil cooler and turbo installed 6 months ago. i have a loud whistling noise on acceleration and when i let of. not blowing coolant out degas bottle..no fluid loss..no loss of power. Truck runs great. was thinking either head gaskets or maybe y or up pipes cracked. any ideas???:s:

Most likely the pipes. Check the bellows and each connection point.

Are you smelling any exhaust in the cab? it is common to smell it when the Y pipe is cracked.

definitely cracked y pipe

Thanks for the reply guys..no smell inside but yes around the front and under the hood.

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you were right heavy assault....top bellow was worn out...thanks for your help...all repaired now...have to say.. i do kinda miss the cool turbo sound. thanks again:jump: