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Failure mode - Ford 6.7L Power Stroke Diesel (Scorpion)

VGT turbocharger failure - generation dependent (ceramic-bearing GT32 vs journal-bearing GT37+)

Reliability tier: verified - verify before ordering, see /disclosure/

Symptoms

Compare with the other causes of the same sign on this engine: loss of power, limp mode or derate (5 causes) · blue or gray smoke (burning oil) · oil leak, oil consumption or rising oil level (2 causes) · ticking, knocking, rattle or whine (3 causes)

Root cause

Two genuinely different failure stories under one nameplate (an aftermarket parts maker's 6.7L Power Stroke guide is explicit about this split; corroborates our editorial notes's narrower note on 2011-2012 ceramic-bearing failures). Gen1 (2011-2014) used a Garrett GT32 single-sequential turbo with a dual-sided compressor wheel on ceramic ball bearings; the ceramic elements proved brittle under the shock loads and heat of heavy towing, and many gen1 trucks have already had the turbo replaced with a steel-bearing unit. From 2015 the larger GT37 with conventional journal bearings largely eliminated outright bearing failures; the dominant gen2/gen3 issues instead became VGT vane sticking from soot/carbon accumulation and electronic actuator faults - a mechanically different failure mode requiring different diagnosis and parts.

Diagnosis

Fixes

gen1 (2011-2014): replace with an updated steel-bearing turbo assembly, not another ceramic-bearing original-design unit ()

gen2/gen3: replace the electronic actuator alone when vanes move freely but the actuator has failed (cheaper than a full turbo) ()

gen2/gen3: clean/free sooted VGT vanes before condemning the turbo outright ()

Prevalence

occasional

Parts for this repair run about $1,850-$2,000: see them next to the other repairs on this engine in repair costs.

Affected configurations (108)