Bent pushrod, what is the cause?!
Old gas will often cause a valve to stick. Once valve won’t move something has to give, often it’s a push rod.
Stumper:
or a bad lifter that is collapsing and allowing the rod to come out...
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It’s a 71, and photos appear to show solid lifter rockers; no collapsing.
Over revving can bend push rods.
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