Zac23

hey guys im having another problem with my 02 suburban it’s misfiring and i changed the coils and the wires and spark plug and now i see smoke coming from the where the exhaust manifold is on the passenger side and i just recently fixed my fuel sender problem it was arcing out idk if that would cause the problem and does anyone know the exact gauge of that pink wire for it and is the red splice i used too much voltage