85 phazer running on one cylinder
ive had this phazer for about a year now and i have sucessfully redone the entire fuel system last year, this year i re cleaned the carbs twice and changed the plugs. i took it out and it ran great beside the bog on launch. Today i went to start it up and it seemed to be running on one cylinder. i took the plug out and placed it on ground and there was no spark. but it was went. i changed it and it continued to run on one cylinder. i took it for a run around the house and when i went to check it it was colored black. so it must be firing i assume but why not all the time? i swapped the plug wires around the there was still nothing on that plug. can anyone think of what would cause this?