Hey guys. i got a 2007 explorer with a 4.6 3v. it's got a dead miss around1500 rpm. It's not threw a sel yet and been doing this for a while. i think it's a coil pack or plug but don't want to replace all of them if they don't need to be. also i've got an exhaust leak. but i've got it narrowed down to the passenger side manifold because there is a stud missing on cyl 1 at the top. don't know if this is causing my miss but wouldn't think so. is there any way for me to find the miss with out the sel on with out taking it to the stealership?