im working on a 1992 camaro 3.1 the problem is that while cranking the engine it floods the cylinder badly and its in all cylinders i have good spark replaced fuel reg already iv got good fuel presure and return fuel too.

I had a similar problem with my v8. it would flood it to where it wouldnt start. ended up being that the injectors were sticking open when you turn the key to on, because it automatically primes the engine. I just pulled the injector wires, started the motor to burn the fuel out, and reconnected the injector wires and it worked great. this is on the tbi v8, never seen the six cylinder version but maybe its similar