I have a 1987 N/A Rx-7.... I cannot get it to idle, cleaned the BAC valve, no difference, and it doesn't like to start when it is warm... why are these things happening??? Any help would be duely noted! I also did the better grounding thing to it, so it isn't that... what else could it be? Thanks
Nick

 

Have you tried a compression check? My friend has a 91 n/a and had the same problem found out it was his compression in his rear rotor. to be cheap about it you could just test the trailing spark plug hole one at a time unless your rich, then you could buy the mazda compression tester and test them all at once .
87 GXL straight out exhaust w/ rb headers in NJ 170,000 no rebuild running strong.(except the electrical problem right now.)

 

Updated title to reflect the actual question