I have a 1988 Mazda RX-7 and I have replaced the coil and T1-T2 ignitors and still my idle fluctuates. I checked the timing oN both the leading and the trailing ignitors. Both leading are perfect and the T1 is fine too. But still after replacing the coil and ignitor the T2 barely sparks. It's not even close to the other 3. Can anyone help me?

 

Have you made sure that the pins in the connectors are located correctly ? clean all the connections and re -try, You should be getting good strong sparks from all the plugs if you say you have replaced all the coils make sure the connectors are located on the correct coils , if they are then you may have a fault with your wiring loom or P.C.M . Inspect the basics first if they are all ok its going to get tougher i recommend you take the vehicle to a mazda dealer or a RX- 7 specialist.