Been having some problems with my computer controlled 305 .The engine has a horrible idle and studderes and stumbles like it has a miss. Cranks up fine but the idle is so horrible. Has new o2 sensor, plugs , wires and dist cap and rotor. Thought it was the carb i had just had rebuilt but bought new quadrajet and placed it on the engine still has the same running problem. Had a shop check the timing on it and that said it was ok. Could this be an ignition related probelm (control module/coil) ? Anybody have any ideas of what the heck is going on with it. Really need to get it running right.

 

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