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PICKUP - 6.7L DIESEL ENGINE - RUNS ROUGH DURING EXHAUST REGENERATION PROCESS - BUILT ON OR BEFORE 2/23/2016 ISSUE Some 2015-2016 F-Super Duty 250-450 Pickup vehicles equipped with a 6.7L diesel engine and built on or before 2/23/2016 may exhibit a runs rough/misfire condition only during the exhaust regeneration process. This condition typically occurs on light throttle tip in between 64-113 Km/h (40-70 MPH) and will not set diagnostic trouble codes (DTCs). The concern may be intermittent and a knocking noise may be present during the concern. SERVICE PROCEDURE 1. Reprogram the powertrain control module (PCM) to the latest calibration using Integrated Diagnostic System (IDS) release 99.03 or higher. Make sure you are connected to the internet when entering module programming to obtain the latest updates. Calibration files may also be obtained at www.motorcraftservice.com 2. Did the customer indicate the message center displayed a Cleaning Exhaust Filter message prior to the concern? a. Yes - proceed to Step 3. b. No - proceed to Step 6. 3. Remove the left cylinder head. Refer to Workshop Manual (WSM), Section 303-01. 4. Replace all eight (8) exhaust valves and valve seals. Refer to WSM, Section 303-01. (Figure 1)

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Date Published
MAR 07, 2016
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