I'm having some problems with my car and am in the need of some help. It is a 96 mustang gt with the 4.6 engine. Not too long ago my intake manifold cracked And ever since its been all downhill. I replace the intake manifold and changed my oil. It was all good until I started having a bad misfire only while accelerating or giving it gas.. I scanned it and it came up as a misfire on cylinder 1. I replaced all my spark plugs and now it is misfiring bad at idle and I can't even drive it. I took it around the block and the check engine light was flashing so I took it straight to the garage and popped the hood, there was smoke and it smelled horrible. I checked my coils and they seem fine. I'm so confused and concerned about this. I'm looking for any and all help I can get!