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Loud Squeal/Whistle under moderate acceleration, Video included

1K views 4 replies 3 participants last post by  64physhy 
#1 ·
If someone could point me in the right direction i would appreciate it greatly.

 

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#2 ·
check for soot around the exhaust manifolds. also check for soot around the flex joints of the exhaust feed pipes to the turbo. rh side especially
 
#4 ·
often times on these trucks, the rh exhaust manifold studs break at the front of manifold. unfortunately the ac compressor, alternator and heat shielding make it impossible to see. i usually listen in that area while someone revs it up.
could smoke test as well i suppose
 
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