Timing chain alignment, how to manually set timing without damaging the CAM valves?

Tiny
CADI2007
  • MEMBER
  • 2007 CADILLAC CTS
  • 2.8L
  • V6
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
Hello, I replaced the timing chain components, following the stage 1 and stage 2 set up along with the cam alignment tools. During the installation I couldn't get to line up one of the makings from the crankshaft sprocket, I was one tooth off, I rotated the engine manually to make sure nothing was hitting anything. I put the engine back together, the engine started, check engine light when away, but came back 30 minutes later with bank 1 and 2 system performance and correlation trouble codes. The original chains were stretch due to the high mileage. My question is, how do I manually set timing without damaging the cam valves, I think that I replace the timing chains when the engine was out of timing. Please help, I'm running out of options. Thank you
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Tuesday, July 19th, 2022 AT 7:37 AM

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Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,014 POSTS
Hi,

I'm not sure what you are asking. It sounds like you did everything correctly, but it was one tooth off. Are you concerned about the alignment marks?

If that is the case, I attached where they should be below. Take a look at them and let me know if that helps. If it is something different, let me know that as well.

Take care,

Joe

See pics below.
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Tuesday, July 19th, 2022 AT 7:50 PM
Tiny
CADI2007
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Hi Joe,

Thank you for taking the time to answer. My primary question is, what needs to happen when Cylinder #1 is on TDC, are the flat slots on the camshafts supposed to be lined up and facing up? Are the timing chain marks supposed to be line-up with the sprocket marks?
After I finished the timing chain replacement, I still have the performance check engine light codes, I am trying to figure out what I missed to correct it.

Thank you for your help.
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Wednesday, July 20th, 2022 AT 1:18 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,014 POSTS
Hi,

Yes, the links need to be aligned with the sprockets. If they are all aligned, it should be in time. They have a specific number of links between the marks.

Now, when you are at top dead center (TDC) the camshaft lobes on cylinder 1 should be the furthest away from opening. If you have both flat spots up, that tells me one of the lobes is opening a valve.

Does that help? Let me know.

Take care,

Joe
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Wednesday, July 20th, 2022 AT 8:27 PM
Tiny
TY
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Never did see which way from top dead center you need to be to begin setting the timing you said it to top dead center then go back to where the timing marks need to be aligned?
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Monday, September 18th, 2023 AT 5:58 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,014 POSTS
Hi,

I'm not sure what you are saying. Do you mean the sequence of things needing to be done? It should be in the directions I attached.

Let me know what I can do to help.

Joe
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Monday, September 18th, 2023 AT 8:39 PM

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