68PK21 440.6bbl
Old Man with a Hat
I didn't hear any engine knock ... are you sure?
Yes it takes a trained ear, just had a re-listen. Download the video, play it in a good video player at full volume with a set of good headphones, set the jumpback to 5 to 7 seconds and just as the camera approaches the side of the hood with the engine coming into view it is the loudest, as the video/camera comes around to the front of the engine to the right side, do a jumpback to re-listen several times to familiarize yourself with the 'Printing press' sound.
Alternator is new, A/C is not engaged, not a exhaust leak, P/S? maybe, I'm not familiar with that type of pump but P/S is more of a whirry noise, not a tappet 'tick' so I would suspect a conrod bearing on the left side of engine as the sound diminishes as the camera pans to the right side. deffo bring a stethoscope or a very large screwdriver if you do a eyes on inspection.
BTW it's a jackass video with a ear busting intro/exit (flashy) whizbang video editor from a dealer so what can you expect. A good video of a running engine should be a stationary shot of at least 60 seconds (each side) with someone gradually increasing engine rpm for those 60 seconds. After that if you want some WOW, a couple of WOT floorboard stomps to thrill the kiddies! Buyer beware on this one.