engine problem

Hello I have a 1982 supra. The 6 cylinder is not working properly, I dont think it is the ignition system because that was just replaced. Is it possible that I need a new fuel injector, Any help would be great.

What exactly do you mean it's not working? That could mean anything, you would have to be a little more specific in order for us to give you any advise. Off the top of my head it could be a spark plug mis-fire, a blown piston ring, a cracked piston, a cracked cylinder. It could be anything. Find out a little more and then repost. Good luck.