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Symptoms · 6.4 Power Stroke (2008-2010)
6.4 Power Stroke (2008-2010): ticking, knocking, rattle or whine
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
9 NHTSA owner complaints match it, out of 133 checked
How it shows up
- oil consumption without external leaks; boost whine change
Its other signs
- oil traces in the exhaust/downpipe; oil wetting the DPF inlet
- secondary: DPF ash-loading accelerates from the oil
How to tell it apart
- inspect the downpipe/DPF inlet for oil wetting
- end-play check on both turbo stages; check charge side for oil too (seal direction tells the stage)
- rule out pedestal-level leaks (6.0/7.3 pattern) - the 6.4's leak points differ
Usual fix
reman/replace the turbo set (both stages as one decision on a compound system)
Recalls and bulletins
TSB 20228
Root cause, parts and sources →
aggregated
How widespread: Common
How it shows up
- valve-train tick that grows with mileage (typ. 100-150k)
Its other signs
- injector contribution codes from lost motion
- wear found at service on tips/roller ends
How to tell it apart
- stethoscope/valve-cover-off inspection of tips at high-mileage services
- cylinder-balance test for contributing holes
- check pushrods/rollers while in there
Usual fix
replace rocker arms (sets available; upgrade designs from specialists)
Recalls and bulletins
TSB ASI-49219
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 derateBlue or gray smoke (burning oil)Losing coolantOverheating or temperature creeping upOil leak, oil consumption or rising oil levelMisfire, rough idle, hesitation or surging
Everything on the 6.4 Power Stroke (2008-2010)Its recalls and bulletins