What does this look like to you guys. 2011 Tahoe. Rocker on number 7 seems to move a little bit not sure if it’s due to a bent pushrod or if it’s a collapsed lifter. Couldn’t get the rocker the go backwards like Charles does in his videos but I might have not been in the right spot on the cam or something like that. Any opinions would be greatly appreciated.
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Considering the frame rate of the video versus the rocker speed it's hard to tell. But it looks to me like cylinder 7 has an intake rocker that's not moving as much. Shut it off and check how loos the rocker is. If not loose remove the rocker on that one and cylinder 5 intake. Compare the lift of the 2 cranking by hand. If cylinder 7 has less lift It likely has a damaged roller and wiped camshaft. If that's the case I do offer full delete kits here on my website as well.