Starts on only five of the six cylinders

Hi, I have got a CDI that just stopped got a reading of all pots down all. Glows down VCT not working or stuck open and so on. I changed glows. MAF's cam sensor and crank sensor and got to high injector voltage. I have found that the third cylinder glow is above the multi meter reading of the others. The car will. Now start and run on five cylinders if this plug is disconnected. I have checked the wire plug reading and is about the same as the others, but if I plug it back in it kills the engine and wont start with it connected, but once disconnected runs again. Is there a coil winding fix for this injector or straight replace and would you say once replacement is done car should be fine? Even though the mags have been replaced the scanner still shows both at fault. I know this wont stop it running, but still confused why they are still showing faults. Any suggestions or help would be appreciated.