Grand Am Cylinder 3 Misfire Code
Cylinder 3 misfire
I am having a cylinder 3 misfire code. Cylinder three plug is the middle back plug if I am not mistaken. I check the connections and everything is good. Pulled the wire off at the coil pack and it is clean and good to go. ran up and down the wire to check for burns. holes rips etc and nothing was wrong there. I pulled the plug out, it looked fine, but I still replaced it. Re-attached it. Let the battery unplugged for 1.5 hours, plugged the connection back in, started the car and the issue still remains. I don't think it is the coil. The car has 35,000 miles and the UIM gasket was replaced at 32,000 miles so I don't think it is that.
Maybe the injector went bad? I am running Lucas gas treatment in it right now.