2011 Tahoe/Bad engine ticking, 153k miles

[NotQuiteanSS]

Year/Make/Model/Engine??

2011 Chevy Tahoe 5.3L

 

[Rocket Man]

Valve train looks good. Nothing out of place. Time to look underneath....

View attachment 273290 View attachment 273291

I see at least one broken exhaust manifold bolt.

 

[gooffeyguy]

Also might want to make sure the spark plugs are still tight/torqued.

Many years ago on another vehicle I had a ticking noise and thought it was valvetrain. I was changing the plugs and found one loose and it didn't dawn on me that it could have been causing the ticking noise until I started it after changing the plugs and the noise was gone.

Sent from my SM-G930V using Tapatalk

 

[NotQuiteanSS]

Is there a way to upload a quick video? I just tried a 10 sec video and it was denied (too large) Definitely sounds like a mechanical tic, with a mechanical popping a few times. It sounds the same on both sides of the engine.

If a lifter or two broke, How bad ($$) of a repair do you folks think it is? Just lifters, or the whole enchilada? IE cam, lifters, push rods, and so on....

I am at 153k miles

 

[wjburken]

Is there a way to upload a quick video? I just tried a 10 sec video and it was denied (too large)

Most folks post the video on YouTube and add a link to it here.

 

[NotQuiteanSS]

 

[NotQuiteanSS]

Most folks post the video on YouTube and add a link to it here.

Done!

 

[donjetman]

That's not good

 

[wjburken]

Ummm.....Yeah. That sounds like a likely collapsed lifter.

When you had the valve covers off, did you happen to try and turn the motor over by hand by putting a socket and breaker bar on the harmonic bolt?? If so, did all the rockers move?

 

[Rocket Man]

I wouldn’t run it anymore until it gets repaired. I agree it sounds like a collapsed lifter.