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Symptoms · 6.4 Power Stroke (2008-2010)
6.4 Power Stroke (2008-2010): blue or gray smoke (burning oil)
2 documented failures on this engine list this among their signs. They are ordered from the most widespread down. Each one shows the signs in its record's own words, how to tell it from the others, the usual fix and any recall or bulletin.
Not sure which engine you have, or want the recalls for your exact truck? Check your VIN: it names the engine and lists the campaigns for that model year. Whether a recall is still open on your VIN: nhtsa.gov/recalls.
verified
How widespread: Common
8 NHTSA owner complaints match it, out of 133 checked
How it shows up
- oil consumption rising; blue smoke
Its other signs
- rough running / power loss on #7 or #8; engine replacement conversations
- fuel-diluted oil history (failed regens) precedes it
How to tell it apart
- track oil level/consumption trends; lab oil analysis for fuel %
- cylinder-balance test + compression/leak-down when a hole drops out
- inspect for failed-regen patterns (aborted regens, city duty) before blaming hardware
Usual fix
engine-level decision: reman/used long block vs rebuild with upgraded rings/pistons (state cost tier explicitly in recipes)
Root cause, parts and sources →
aggregated
How widespread: Occasional
How it shows up
- oil consumption via guides; blue smoke at startup in advanced cases
Its other signs
- valve seat/guide wear found at top-end service
- long-run risk: dropped valve damage
How to tell it apart
- top-end inspection at rebuild; guide-to-stem clearance measurement
- watch oil consumption/vapor traces as leading indicators
Usual fix
at head service: bronze-guide lining/replace guides (specialist), or reman head
Root cause, parts and sources →
Other symptoms on the 6.4 Power Stroke (2008-2010)
Hard start, long crank or no-startLoss of power, limp mode or derateLosing coolantOverheating or temperature creeping upOil leak, oil consumption or rising oil levelTicking, knocking, rattle or whineMisfire, rough idle, hesitation or surging
Everything on the 6.4 Power Stroke (2008-2010)Its recalls and bulletins