i have a 92 camaro rs with the 305 tbi... my car idles ok but stumbles a lot and miss fires when it is in drive or reverse i was checking the distributer and noticed that it was not sending out a spark on to some of the plugs anyone know what could be the problem... i changed the distributer and rotor not to long ago... its an accel one

 

How did you determine this? What condition is the wires and plugs in? You can get a good pair of insulated pliers and pull each wire off of the cap while it is running and see if the arch jumps from the cap to the wire.