Fuel System - Runs Rough/Misfire/DTC's P0300-8
TSB 12-3-403/08/12
6.7L DIESEL - RUNS ROUGH/MISFIRE - BROKEN
INJECTOR HOLD DOWN CLAMP - VEHICLES BUILT
ON OR BEFORE 2/12/2012
FORD:
2011-2012 F-Super Duty
ISSUE
Some F-Super Duty vehicles equipped with a 6.7L diesel engine built on or before 2/12/2012 may exhibit a runs rough and/or misfire concern with or with out diagnostic trouble codes (DTCs) P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 and P0308.
ACTION
Follow the Service Procedure steps to correct this condition.
SERVICE PROCEDURE
1. Inspect all eight (8) fuel injector hold down clamps for a broken ear. Are any of the injector hold down clamps broken? (Figure 1)
a. No - this article does not apply, refer to Powertrain Emission Control Manual (PC/ED) for normal diagnostics.
b. Yes - replace the broken fuel injector clamp(s), reseal the affected fuel injector(s) and replace the injector-to-valve cover seal. Refer to Workshop Manual (WSM), Section 303-04C.
(1) Pry the injector-to-valve cover seal out of the valve cover using a screw driver. The new seal can be installed using a 22 mm socket or equivalent.
2. Inspect the fuel injector return hose connection at the injector(s) for damage. If damage is present, replace the injector return hose. Refer to WSM, Section 303-04C.
Parts Block
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage Warranty/ESP coverage limits/policies/prior approvals are not altered by a TSB. Warranty/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool.
OPERATION DESCRIPTION TIME
120304A 2011-2012 F-Super Duty 1.8 Hrs.
6.7L SRW: Check DTCs,
Inspect Fuel Injector Hold
Down Clamps, Replace
One Injector Hold Down
Clamp Right Side, Reseal
Injector And Injector To
Valve Cover Seal (Can Be
Claimed With Operation L)
120304B 2011-2012 F-Super Duty 2.6 Hrs.
6.7L SRW: Check DTCs,
Inspect Fuel Injector Hold
Down Clamps, Replace
Two Or More Injector Hold
Down Clamps Right Side,
Reseal Injector And
Injector To Valve Cover
Seal (Can Be Claimed
With Operation L)
120304C 2011-2012 F-Super Duty 1.8 Hrs.
6.7L SRW: Check DTCs,
Inspect Fuel Injector Hold
Down Clamps, Replace
One Injector Hold Down
Clamp Left Side, Reseal
Injector And Injector To
Valve Cover Seal (Can Be
Claimed With Operation L)
120304D 2011-2012 F-Super Duty 2.7 Hrs.
6.7L SRW: Check DTCs,
Inspect Fuel Injector Hold
Down Clamps, Replace
Two Or More Injector Hold
Down Clamps Left Side,
Reseal Injector And
Injector To Valve Cover
Seal (Can Be Claimed
With Operation L)
120304E 2011-2012 F-Super Duty 3.9 Hrs.
6.7L SRW: Check DTCs,
Inspect Fuel Injector Hold
Down Clamps, Replace All
Injector Hold Down Clamps
Both Sides, Reseal Injector
And Injector To Valve
Cover Seal (Can Be
Claimed With Operation L)
120304F 2011-2012 F-Super Duty 2.0 Hrs.
6.7L DRW: Check DTCs,
Inspect Fuel Injector Hold
Down Clamps, Replace
One Injector Hold Down
Clamp Right Side, Reseal
Injector And Injector To
Valve Cover Seal (Can Be
Claimed With Operation L)
120304G 2011-2012 F-Super Duty 2.9 Hrs.
6.7L DRW: Check DTCs,
Inspect Fuel Injector Hold
Down Clamps, Replace
Two Or More Injector Hold
Down Clamps Right Side,
Reseal Injector And
Injector To Valve Cover
Seal (Can Be Claimed
With Operation L)
120304H 2011-2012 F-Super Duty 2.0 Hrs.
6.7L DRW: Check DTCs,
Inspect Fuel Injector Hold
Down Clamps, Replace
One Injector Hold Down
Clamp Left Side, Reseal
Injector And Injector To
Valve Cover Seal (Can Be
Claimed With Operation L)
20304J 2011-2012 F-Super Duty 2.9 Hrs.
6.7L DRW: Check DTCs,
Inspect Fuel Injector Hold
Down Clamps, Replace
Two Or More Injector Hold
Down Clamps Left Side
Reseal Injector And
Injector To Valve Cover
Seal (Can Be Claimed
With Operation L)
120304K 2011-2012 F-Super Duty 4.1 Hrs.
6.7L DRW: Check DTCs,
Inspect Fuel Injector Hold
Down Clamps, Replace All
Injector Hold Down Clamps
Both Sides, Reseal Injector
And Injector To Valve
Cover Seal (Can Be
Claimed With Operation L)
120304L 2011-2012 F-Super Duty 0.7 Hr.
6.7L DRW: Additional Time
If The Injector Return Hose
Replacement is Necessary
(Can Be Claimed With
Operations A-K)
DEALER CODING
CONDITION
BASIC PART NO. CODE
9C334 D4
Disclaimer