Timing Stage 2 procedure?

Tiny
RONALD DEVOLD
  • MEMBER
  • 2013 CHEVROLET IMPALA
  • 3.6L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 254,679 MILES
The flats on the camshafts do not line up together. On one side the flat is up, and the crank sprocket marks are lined up. The other side is off set from top. My question is, at that point, can I remove the chain and turn that one off set camshaft until the flat is at top? If not, what shall I do?
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Saturday, May 25th, 2024 AT 7:00 AM

16 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,055 POSTS
Hi,

They need to be aligned, so yes you will have to turn it. I attached a pic below showing timing mark locations.

Let me know if this helps.

Joe
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Saturday, May 25th, 2024 AT 7:13 PM
Tiny
RONALD DEVOLD
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I see where the marks are supposed to be. Is that where each has to be in each Stage Timing? Or when I put it in Stage 2 timing, it supposed to look like the pic. Or, after putting it in Stage 2 timing and removing the chain, the other side should look like that in Stage 1 timing. Because, the way my engine is, when putting it in Stage 2 timing. The IN and EX letters is not facing up. The other side is facing down, so if I rotate the engine and align the crank sprocket marks to Stage 1 time they should be facing up. Also, the Cam Sprockets has rectangular mark (arrow) and a circle mark on them. What's the difference?
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Sunday, May 26th, 2024 AT 6:14 AM
Tiny
JACOBANDNICKOLAS
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Hi,

The pic I sent is after the secondary chains are installed.

I attached a pic below. Take a look and let me know if there is one option there that fits exactly what is needed and I'll get it for you.

Let me know.

Take care and Happy Memorial Day!

Joe
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Sunday, May 26th, 2024 AT 7:43 PM
Tiny
RONALD DEVOLD
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I will go ahead and remove the chain on the right side and turn the other cam so that is they both is facing up. Then continue. Hopefully that will work as long as I can get it in Stage 1 timing.
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Monday, May 27th, 2024 AT 2:34 PM
Tiny
JACOBANDNICKOLAS
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Hi,

Let me know how things work out for you. If you need any specifics from the list I attached above, let me know.

Take care,

Joe
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Monday, May 27th, 2024 AT 6:25 PM
Tiny
RONALD DEVOLD
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  • 119 POSTS
So, I got the left side chain assembly on. But on the right, I noticed the camshaft is pretty loose. Just seeing if that's normal or not. I have attached a video of it. Let me know, thanks.
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Saturday, June 1st, 2024 AT 11:39 AM
Tiny
JACOBANDNICKOLAS
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Hi,

Is the chain attached? Also, if all cam lobes are off the lifters, it should turn easily. But there should be some resistance. That does appear to be somewhat loose.

Is there any play front to back or side to side in the bearings? There shouldn't be.

Let me know.

Joe
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Saturday, June 1st, 2024 AT 9:12 PM
Tiny
RONALD DEVOLD
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There is hair of play front to back no play side to side and the chain is not attached.
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Monday, June 3rd, 2024 AT 6:21 PM
Tiny
JACOBANDNICKOLAS
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Hi,

It is normal for a very slight amount of end play as you described. With that in mind and the idea there is no other play, chances are what you experience is normal.

Let me know.

Joe
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Monday, June 3rd, 2024 AT 7:52 PM
Tiny
RONALD DEVOLD
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I finished replacing all the chains and I got the front cover on but I don't know if there is a torque sequence or not. I am using an online Chilton's Repair Manual but it doesn't mention torque specs on the installation procedures.
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Wednesday, June 5th, 2024 AT 5:00 PM
Tiny
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Hi,

I wasn't able to find a sequence for it, but I did find the torque specifications. As far as bolts, it indicates three different sizes. I'm not sure if all are relevant to what is needed. However, I did attach them below.

Note that the one size indicates the procedure is done in two steps.

Let me know if this helps or if you have questions.

Take care,

Joe

see pic below.
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Thursday, June 6th, 2024 AT 7:34 PM
Tiny
RONALD DEVOLD
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Hello, I know it's been a while but the car I am working on is not a rush job. The weather in Louisiana has a lot to do with it. Anyway, I was able to install the new timing chain assembly and after a few attempts the car started. I will start it up at least once a week. Initially the car would just crank but wouldn't start. After attempting a few more times it will eventually start. This happened the last four weeks in a row. Today I tried something different I turned the key without starting to build up fuel pressure and I would repeat that 2 or 3 more times and the car would start. I then connected my diagnostic tool and pulled up the fuel system and recorded it. I'm thinking it's a fuel issue. The pressure is reading 60 psi. And I noticed this engine has a direct fuel pump on the rear of the engine. Also, a fuel pump in the tank. If I'm not mistaken, this engine doesn't have a fuel pressure regulator, but it has a fuel pump flow control module. But it may not be a fuel issue. The only current code coming up is a P0300 misfire code. I did clear the codes at first before I started any repairs.
So now I need a little guidance on what to check or the actual issue. Thank you
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Monday, July 8th, 2024 AT 12:54 PM
Tiny
JACOBANDNICKOLAS
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Hi,

If you were able to resolve the hard start by cycling the ignition switch (good idea, by the way), that tells me there is a pressure drop off issue.

When you turned the key off, how long did the pressure hold? If you have your scan tool connected before turning the key on for the first time, what is the pressure before cycling the switch?

Joe
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Monday, July 8th, 2024 AT 7:24 PM
Tiny
RONALD DEVOLD
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Hello,

Before turning on the ignition, there was no pressure. Once I turned on the ignition, the pressure read 60.3 PSI. After shutting the engine off, the pressure held. But it dropped over night. It did hold for 20 minutes.
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Wednesday, July 17th, 2024 AT 2:38 PM
Tiny
RONALD DEVOLD
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I've attached a video of the fuel system readings.
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Wednesday, July 17th, 2024 AT 6:36 PM
Tiny
JACOBANDNICKOLAS
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Hi,

It shouldn't drop off to 0 psi. I attached the manufacturer's diagnostics below. Take a look through them and let me know if you are comfortable performing them.

Take care,

Joe

See pics below.
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Wednesday, July 17th, 2024 AT 7:51 PM

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