my back cylinder on the pass side of my 305 tbi is not firing i checked the spark pug its good it has compression the spark pug wire and rotor and cap are good to but it still wont fire any clues on what else could cause this

 

Is the spark plug and spark plug wire for that cylinder new or what? Sometimes they may look good but still be defective.

 

rotor cap wires and all spark pugs are new practically i had the car at school it rarely was driven except for the three hr drive back home for holiday breaks

 

Is the cylinder getting air and fuel? I know you said it had good compression. Only thing I can think of is that its firing but not getting fuel due to a blockage of some sort. Have you tried changing the plug just in case. Some of them can get a hairline crack. I know I had bought a set of accel header plugs and more than half wouldn't fire. I changed them to delcos and have had no problems since. Ngk are good too

 

May be a good idea to check the plug wire with a volt meter for continuity

 

i check the ohms of the wire it about 24 inches and its 8.47 so it should be good right