I finally got my newly purchased Sprint started this morning.
I noticed a clanking noise after the car was running for about 10 seconds. Every time it clanks, the car loses a little power (like a miss).
I don't think it's a rod knock (it doesn't sound like any rod knock I've ever heard) It's loud (you can hear it in the car) and it only clanks once every couple of seconds or so.

I decided to pull the plug wires to see if it was coming from a single cylinder.
I pulled cylinder one, the car died.
I pulled cylinder two, the clanking stopped and the car actually seemed to run better, but with an intermittent drop in RPMs followed by a slow, progressive increase in RPMs.
I pulled cylinder three, the car died.

So, what is potentially wrong with cylinder two (broken piston?)?