Hi all I need a help if you know or if you had a same problem like I have now please. My van is E-150 v8 5.4 engine. Misfiring cylinder 8 I have changed coil and spark plug 3 times all new. Same problem same code.*
It's now shaking specially on the red light also not that much power going to up hill. I tested cylinder 8 plugs to plugging with extra coil and spark plugs it's not firing but wire has power 14 volts coming some how its not firing. What would be problem? Please help.