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2012 Chevy Malibu 3.6 P0016 P0017

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Old 08-26-2024 | 11:59 PM
  #11  
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Weird that one is tight and one is loose. That is two separate chains , so it is possible to have this happen. It could be that the Bank 1 tensioner is bound up I suppose.

This is the layout of that engine:


Old 08-27-2024 | 11:43 AM
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I pushed down on the bank 1 chain as it was cranking and I didn’t feel any fluctuations.
I plan on doing a crank and cam correlation test once my oscilloscope comes in.
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Old Yesterday | 06:03 PM
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So I’ve finally gotten back to working on this issue. I 100 percent verified that the timing was off by doing a crank and cam correlation test with an oscilloscope. Only bank 1 was out of time.
Today I pulled the timing cover off again and from what I can tell, the bank 1 chain was off by half of a tooth. And the reason why the chain was so tight was because there was only 11 1/2 chain links between the camshaft timing marks and there’* supposed to be 12. Not sure how I accomplished that but it’* prematurely wore the chain guides.
So I figured I would restart and at least time the bank 2 chain and the primary chain but found that the tensioner on bank 2 is already failing. I feel like I’m catching a lot of poor quality parts.
Now I plan to just buy a whole new kit of chains, tensioners and guides.
After I get parts and retime this engine again what would anyone suggest as the best way to prime the timing system?
Before I would just hand crank a few revolutions and then use the starter and crank for a while with no fuel or spark of course.
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Old Yesterday | 11:34 PM
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You're talking about priming oil in the tensioners and phasers, right?

Yeah, crank it for a while.
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