Metal chunks in oil pan..

[Rocket Man]

Now that you guys mentioned it, that does look like timing chain tensioner pieces.

 

[BG1988]

I kinda wonder if there was an issue with the timing chain and they fixed that, but never pulled the oil pan to clean it. Would be interesting to see what the timing chain and tensioner look like.

easy to check see if any of the bolts have been pulled or have some wear on them..

No it was running fine no lights. Ive never pulled the pan before, i just bought it about 5000 miles ago.

Buy a AFM disabler if possible...

The mpg will be the same.

 

[wsteele]

I kinda wonder if there was an issue with the timing chain and they fixed that, but never pulled the oil pan to clean it. Would be interesting to see what the timing chain and tensioner look like.

Sounds right to me.

 

[Geotrash]

Timing chain tensioner for sure. Time to pull the pan and timing cover and replace.


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[Barry Vaughn]

I've never been inside an ls but being a major sb chevy rebuilder, the big piece looks an awful lot like a rod bearing. If it is, I can't believe it's still running without a LOT of noise. For those ls experts, what does it look like to you?

 

[Rocket Man]

I've never been inside an ls but being a major sb chevy rebuilder, the big piece looks an awful lot like a rod bearing. If it is, I can't believe it's still running without a LOT of noise. For those ls experts, what does it look like to you?

Timing chain tensioner. If it was a rod bearing the engine would have self destructed by now.

 

[iamdub]

+1 for timing chain tensioner.

Here's the parts in place:

https://www.tahoeyukonforum.com/threads/growing-up-doesnt-have-to-suck.93510/page-53#post-1425815

The pad(s) and blade spring in yours got chewed up in the timing chain and gears. They're a soft metal and often don't cause any real damage to the timing set.

 

[thompsoj22]

I kinda wonder if there was an issue with the timing chain and they fixed that, but never pulled the oil pan to clean it. Would be interesting to see what the timing chain and tensioner look like.

Im in complete agreement with this post, pull a valve cover and rotate the crank pulley for/aft and look for excessive play watching valvetrain/lifter movement. If your cam chain is running without the tensioner/guide it would be noisy/sloppy/maybe even slapping on the cover?

 

[iamdub]

Im in complete agreement with this post, pull a valve cover and rotate the crank pulley for/aft and look for excessive play watching valvetrain/lifter movement. If your cam chain is running without the tensioner/guide it would be noisy/sloppy/maybe even slapping on the cover?

Nah, there's not enough slack for it to visibly affect the timing. It also can't slap anything. It can whip around on deceleration, but not much with an automatic trans unless it's in manual mode or held in a lower gear. The LS3 just has a block (damper) that doesn't actively retain the slack in the chain like this tensioner does. Same size timing chain.