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

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.

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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
13 people reported this problem
6 people shared problem details
2005 Ford F-250 Super Duty- 6.0L V8 Diesel Turbo20,000
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.
2005 Ford F-250 Super Duty- 6.0L V8 Diesel Turbo166,565
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.
2003 Ford F-250 Super Duty- 6.0L V8 Diesel Turbo89,000
turbo sticking causing lack of boost
2006 Ford F-250 Super Duty- 6.0L V8 Diesel Turbo105,000
was diagnosed by the dealer.
2006 Ford F-250 Super Duty- 6.0L V8 Diesel Turbo124,901
P2099 trouble code for turbo underboost due to Injector #5 sticking and lack of performance
2005 Ford F-250 Super Duty- 7.3L V8 Diesel Turbo91,000
this has happened 3 times replaced turbos and is happening again
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