Sounds Like Lifter Tick but Rockers All Moving

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2015Yukon

TYF Newbie
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Apr 17, 2024
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Pop the valve cover back off and check to see if all the pushrods are centered in the hole through the head. I have done a bunch of these where the lifter stuck at some point, it bent the pushrod, but then the lifter unsticks. When looking for the ticking the rocker will still move up and down and appear normal, but the pushrod rubs on the cylinder head.
 

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