I was messing around with my car today and i noticed that my throttle cable on my car was loose it has between a 1/4-1/2 inch of play in both the wires connected is that a big deal? do i need to tighten it up? also I got ne spark plugs i took out champion plugs and put in ac delco plugs is there a big difference inthe two of them?

 

There is typically play in the cables, just make sure it goes wide open when you floor it.

Also, in my personal opinion, I ALWAYS use champion plugs in my car, but that's just me.