I have a 99 ranger cut 3.0 V6 flex. Code 305 came up, I know this is misfire in cycle. #5. I found a tan burn and a split on the plug wire. I replaced the plug and all the wires but the code keeps coming up . I switched 1 and 5 on the ignition coil , still came up 5. I put a screw driver on the fuel injector sounds like it piping right . Is there anything else this burnt wire could have caused. Please I'm need of help. I love my truck and don't want to get rid of it.