A little rich on #5, could be burning oil but does look like fuel. I would expect an 0305 code. Could be a leaking injector, bad plug, bad plug wire.

 

Look good to me. The gap looks wide, but hard to tell in a picture. What are you gapped at?

 

 

 

Lean Lean OK Lean Rich OK
I just did this too. Gaps are supposed to be 0.044. All my plugs were there, but one was 0.050. From now on I will check gap before installing. I cleaned my old ones for spares, they were iridiums. Bought new NGK platinums.

 

 

Previous comments are probably correct that its a bit lean, but nothing in that pic screams there's a problem.

You could look up some of the info on engine/intake/injector cleaning, but then there's the if it ain't broke, don't fix theory. It's not like these were ever known for being clean burning efficient engines. Don't over think it, if it's running ok.