91 RX 7 was running fine what would cause your RX 7 non turbo to not start It turns over but sounds like it is starving for gas?

first need to know at what point did it start acting this way. normally rotarys are very sensitive if not heated up engine tends to flood. check to see if engines flooded first, then check for spark and fuel. same thing happened to my rx-7 found that two injectors were not firing due to bad grounding, which injectors ground through the ecu(computer), determined i had a bad ecu replaced it and runs great.