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Variable Vanes Inside Turbo Seize Due to Carbon Buildup on Ford F-250 Super Duty

Problem Description and Possible Solution

It is common to see the variable vanes inside the turbo seize or bind from carbon buildup. This causes an overboost or underboost condition when driving.

Problem Data
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Average mileage: 88,433 (20,000–166,565)
Engines affected: 6.0L V8 Diesel Turbo, 7.3L V8 Diesel Turbo
5 model years affected: 2003, 2004, 2005, 2006, more2007
14 people reported this problem
Viewing 1 - 6 of 6 comments
truck makes noise like a jet engine trying to spool up. it doesn't loose rpms but will slow down at higher rpm. does not seem to do this on level sufrace only when pulling any grade. I tow a 5th wheel.
The vanes on my turbo failed 3 different times. My friend who works at Garrett told me the first time it is due to the small diameter oil return line, Ford laugh at me. Then at 65,000 they told me of their great fix, I laughed after I had them bring my service records and my documented comment.
turbo sticking causing lack of boost
was diagnosed by the dealer.
P2099 trouble code for turbo underboost due to Injector #5 sticking and lack of performance
this has happened 3 times replaced turbos and is happening again