Originally Posted by Tothemax

Thats fine but I want to know the mechanics behind it. I want to also see definitive proof.

Originally Posted by winchested

Yes prevents spark. Let off the pedal and it fires right up.

Originally Posted by huntnrig

The new TSB is (copied from another post)

TSB 15-0044

Built on or before 10/10/14

FORD: 2011-2014 F-150


This article supersedes TSB 14-0194 to update the Parts List.

ISSUE:
Some 2011-2014 F-150 vehicles equipped with a 3.5L Gasoline Turbocharged Direct Injection (GTDI) engine and built on or before 10/10/2014 may exhibit a malfunction indicator lamp (MIL) illuminated with diagnostic trouble code (DTC) P0016. Other DTCs and driveability concerns may also be present. This concern may be due to a worn primary timing chain.
ACTION:
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
1.Is the vehicle build date on or before 10/10/2014?
a.Yes - proceed to Step 2.
b.No - this procedure does not apply. Refer to Powertrain Control/Emissions Diagnosis (PC/ED) manual for normal diagnosis.
2.Using Integrated Diagnostic System (IDS), with key on and engine running (KOER), select the VCT_INT_ACT1 Parameter Identification Data (PID) in the Datalogger.
a.If VCT_INT_ACT1 PID reads +6 degrees or greater, proceed to Step 3.
b.If VCT_INT_ACT1 PID reads +5 degrees or less - this procedure does not apply. Refer to Powertrain Control/Emissions Diagnosis (PC/ED) manual for normal diagnostics.
3.Replace the primary timing chain. Refer to Workshop Manual (WSM), Section 303-01.
PART NUMBER PART NAME
AT4Z-6268-C AT4Z-6268-C Primary Timing Chain
AA5Z-9439-A AA5Z-9439-A Intake Gasket
BL3Z-6584-A BL3Z-6584-A Cam Cover Gasket - Left Hand
BR3Z-6584-B BR3Z-6584-B Cam Cover Gasket - Right Hand (2011–2012)
DL3Z-6584-B DL3Z-6584-B Cam Cover Gasket - Right Hand (2013–2014)
BL3Z-9E583-B BL3Z-9E583-B High Pressure Pump O-ring
BR3Z-8507-C BR3Z-8507-C Pump Gasket
BR3Z-8527-A BR3Z-8527-A Pump O-ring
7T4Z-8590-A 7T4Z-8590-A Coolant Inlet Seal
XW4Z-6700-AA XW4Z-6700-AA Crank Seal
BR3Z-6020-A BR3Z-6020-A Front Cover Radial Seal
F5RZ-6A340-B F5RZ-6A340-B Damper Bolt
TA-357 TA-357 Motorcraft® High Performance Engine RTV Silicone
ZC-30-A ZC-30-A Motorcraft® Silicone Gasket Remover
ZC-31-B ZC-31-B Motorcraft® Metal Surface Prep
VC-3-B VC-3-B Motorcraft® Orange Antifreeze/Coolant Concentrated
XO-5W30-QSP XO-5W30-QSP Motorcraft® SAE 5W-30 Premium Synthetic Blend Motor Oil
TA-25-B TA-25-B Motorcraft® Threadlock and Sealer
TA-24-B TA-24-B Motorcraft® Thread Sealant with PTFE


OPERATION DESCRIPTION TIME
150044A 2011-2014 F-150 3.5L GTDI: Diagnose And Replace The Primary Timing Chain (Do Not Use With Any Other Labor Operations) 8.9 Hrs.



WARRANTY STATUS
Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions 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.



DEALER CODING
BASIC PART NO. CONDITION CODE
6268 33

Originally Posted by tricountytrail

Is this an upgrade or different Timing chain than original 2011 part number??
I just had TSB 15 0044 done on my truck at 50,000 along with the vacuum pump for the second time. Can i expect this to keep reoccurring? My mileage seems to be way up and truck is definitely smoother than it ever was. ALL oil changes done at the dealership on time.

Originally Posted by tanked_darren

What I want to know is why do you still own this truck? You are one hell of a troll man. How come others have flawless ecoboost? I got a Co worker with 100,000+km on a 2011. All he has done is change the oil. Runs like new.

Most reliable truck ever. You need to sell this truck and buy a tundra like the other trolls claim they will do on here.

My truck will make it to 1 million KM on just oil changes. I've stated this before.