I have a 95 Firebird Formula that ticks cold or warm, 5 times fast, every 10 seconds or so at idle. As the rpm goes up, the ticking happens more frequently. I assume it’s something in the valvetrain, but I would think that it would tick every rotation if that was the case. Does anyone have any ideas on what this could be? Any help is very appreciated. Video of the ticking, it occurs at roughly 3 and 14 seconds through the video.