I cant help you, but i had a friend with the SAME problem on this 1986 Mazda RX7, he said ALL the same problems, and i dont know what he did to fix it, because it just ending up selling it, for like $100. So i wish the best of luck to you.
Also another note, i had a 1989 Mustang with a 5.0 in it, and i had sorta the same problem, i had oil in my TB and intake, but none of the other problems.
Like i said not a help, but you know.
