I Just Bought A 1988 Mazda Rx7 Now Its Giving Me Some Problems. When I Turned The Car On Today It Started At 5000 Rpms And Then It Went Down To 3000 Rpms And Stayed There I Took It Out And The Rpms Started To Go Up And Down It Would Go From 1000 To 2500 And It Would Do It Over And Over. I Dont Know S*** About Rotary Engines So Maybe You Guys Could Help Me Out?