I have a 93 rx7 that was in an accident (front) and I would like to know if there is shutoff switch that prevents the engine from starting or the gas from entering the engine after a frontal collision. And if there is one, please tell me how to turn it off and where it is located. Your help is greatly appreciated.

 

The car is probably just flooded. Have you tried the un-flooding procedure?

http://www.scuderiaciriani.com/rx7/s...g_flooded.html

Also, make sure nothing came loose from the accident like any electrical connections.