CAM phasers and timing off - timing chain marks

  • 2018 FORD F-150
  • 3.5L
  • V6
  • 2WD
  • 79,653 MILES
I was getting ready to replace cam phasers on a 3.5L Ecoboost engine out of a 2018 Ford F-150. I was turning the crank with the chains still installed to get the cam phaser marks in the correct orientation for removal. While I was turning the crank, I heard a pop from the bank 2 intake phaser, and I noticed the intake cam for that phaser was not moving anymore (I became distracted) I then proceeded to remove the front cover, chains and timing components. I lined up the cams and adjusted the one that didn’t move (intake cam bank 2) I then looked down at the crank and I didn’t have the keyway at the 11 o’clock. It’s 180 degrees (5 o’clock). I should have been paying attention to that. So now I don’t know where my timing is at. I tried turning the crank by hand to see if I could set the keyway at 11 o’clock but as soon as I felt resistance at the 6 o’clock position I backed off. I feel like at this point I have to re-time the engine from scratch. I have never encountered this issue, so I have never had to re-time an engine before. If I can get help with the procedure on how to do this. Thank you!
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Monday, May 2nd, 2022 AT 8:04 PM

1 Reply

  • 42,260 POSTS
Good job cranking the engine over by hand you don't want to bend any valves, I have attached the timing chain and cam phaser marks allow with the procedure on how to reset the timing chain tensioners and replace the guides. There are special tools needed to hold the camshafts in perfect alignment while the job is being done; these tools are mentioned in the instructions so you can see what I am talking about. Also, it shows the torque specs so that's nice. Please let me know if you need any other help. Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.
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Tuesday, May 3rd, 2022 AT 6:07 PM

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