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Turbo acting up

271 Views 0 Replies 1 Participant Last post by  2004 f-350
I have a stock 2004 F -350 cc with the 6.0L.
When climbing a hill with a load I was watching my boost gauge go to about 26-30psi and it start bouncing up and down and puffing black smoke out the tail pipe. Is this caused by the vanes sticking? Does it need to be cleaned?
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