so about a month ago my 04 Cavalier started with a nasty knocking noise. wasnt sure what it was, so its been parked. i finally found a video of the same engine thats making same noise, and acting the same as mine...any ideas? I think Rod knock, but I am hoping it isnt...
 
if its your video...THANKS FOR POSTING IT!!! 
 
 
Time to replace the motor.
 
That is definitely a bottom end rod knock.
 
Some people have brain storms, others light drizzles. And then there are those that have droughts.