So im new to the forums and was wondering if anyone else has had the same problem. I replaced my intake manifold and before i replaced it i had a missfire in cylinder 5 from coolant going into the spark plug. So i replaced the manifold and car ran like it still had the misfire. So drove it around and ses light comes on and its for cylinder 8 injector. I checked to make sure contection to the injector was tight and secure with no dirt in the wire connector and everything was good. It didnt look like there was anything wrong with the wires either from what i could see. I just dont know if it was just a coincidence that it went bad at the same time or if theres something else wrong. Any help would be greatly appreciated