Anyone have an idea what might be causing the engine "ticking" noise in the following video?
http://youtu.be/-enNUpue5HY
The noise initially appeared after I adjusted my valves (badly at first, then later to the correct specs) and tightened the driver side timing chain tensioner, which had slipped a notch. While the timing chain cover was off, I noticed that the bolts attaching my crank position sensor had scuffed the oil pump sprocket, but there is sufficient clearance between them now.
oil pump sprocket.jpg
Have I adjusted the valves incorrectly, has a valve failed, or did I damage something else?