Is this one of the 2011's? Looks like it was more exhaust valve failure than glow plug. Not sure on Fords but I have had many 6.2/6.5's s#it out the glow plugs and keep running with no more than impacted debris on the pistons. Yes sometimes the glow plug debris knock too bad to keep running. I hate glow plugs and timing chains used in a diesel due to "value engineering" limiting their life. Something Cummins needs to make a note of before building another V8 that uses both of the weakest failure prone items ever put in a diesel.
They getting a long block from Ford? The turbo needs an inspection as well. Debris can be thrown back into the intake so it needs an inspection before it possibly takes out the new engine...
6.7L DIESEL - RUNS ROUGH - NO CRANK - GLOW PLUG CIRCUIT DIAGNOSTIC
TROUBLE CODES (DTCS) - BUILT ON OR BEFORE 3/29/2011
TECHNICAL SERVICE BULLETIN
Reference Number(s): 14-0127, Date of Issue: July 3, 2014
Superceded Bulletin(s): 12-11-11, Date of Issue: November 16, 2012
Related Ref Number(s): 12-11-11, 14-0127
ARTICLE BEGINNING
ISSUE
Some 2011 F-Super Duty vehicles equipped with a 6.7L diesel engine and built on or before
3/29/2011 may exhibit a runs rough or no crank concern due to a broken exhaust valve. DTCs P0671,
P0672, P0673, P0674, P0675, P0676, P0677 and/or P0678 may be stored in the powertrain control
module (PCM) from a damaged glow plug. The glow plug circuit DTCs may also be accompanied by
cylinder misfire DTCs, cylinder contribution DTCs or other engine performance DTCs.
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
1. Does the vehicle exhibit a runs rough, no crank concern with any of the following DTCs
P0671, P0672, P0673, P0674, P0675, P0676, P0677 and/or P0678?
a. No - this article does not apply. Refer to the Powertrain Control/Emissions Diagnosis
(PC/ED) manual for normal diagnosis.
b. Yes - proceed to Step 2.
2. Remove and inspect the glow plug associated with glow plug circuit DTC present. Refer to
Workshop Manual (WSM), Section 303-07C. Is the glow plug damaged?
a. No - this article does not apply. Refer to the PC/ED manual for normal diagnosis.
b. Yes - replace the engine long block. Refer to WSM, Section 303-01C.
1. For prior approval warranty repairs, complete the cost cap tool by selecting short
block, both cylinder heads, oil cooler and 16 lifters.