I have an Integra RS 1994, Automatic...I got a new transmission installed the other dar because my old one was bad...And I just started it up today...It barely starts, and it idles at 300 - maybe 400 rpms....when i push my pedal to the floor is very slowly accelerates, and backfires while doing it....it sounds like it is only firing on two cylinders, and when I went to replace my spark plugs the 2 middle ones were covered in black (whatever that means) Anyways I have no clue what it is or what to do (Im only 16 and dont knwo much about cars) Does anyone know what it is? Im oblivious...but yea the car barely idles at...actually i would say 200 - 300 rpm's...fill me in!

 

and its not the sparkplugs