What exactly does ping sound and feel like?

[PolloLoco]

I've been told that if I have ping then I'll know it, just like they say about death wobble. I always wondered what was death wobble until I installed my 4" lift and Ford 8.8, I almost pooped myself. I run a 9.7 DCR but I'm running E85 which means that I can run a higher compression ratio. Since I found nothing wrong I trimmed my CPS to advance my timing a bit. I just want to know what to expect if I take it too far. I only have heard ping on the adjustable CR engine in the engine lab at the University of Michigan, and even then I didn't recognize it so easily. My exhaust is really loud, almost annoying. My muffler doesn't do much muffling.

How do I tell if I have knock? Will I feel a loss of power? Will it sound like marbles in a coffee can? Can someone point me to a good example on youtube?

[shawnxj]

knock is kinda easy. have you ever worn boots and walked across a wood floor? it sounds really close to that and it'll change speed with the motor so as the motor revs faster the knock will get faster as well

[Cheromaniac]

Pinging sounds like the marbles rattling inside a spray can when you shake it. The only thing that sounds similar is a rattle from the timing chain when the tensioner is worn.