mraxz-d7a

ok so my 87 rx-7 will not run i used to be able to get it to run now i only can for like 2 secs? im floodin out so much that the fuel is runing off the exhast. like right between the ehast manifold and the pipe it just gets soked. i have changed injectors i have changed plugs. another thing is when i got it to start it would idle fine till i took the ebrake off or tried to to even move. wiring problems?? ive took out the plugs and cranked it over to blow the gas out but it will still not start? any help would be great