94 Firebird, 3.4 litre engine, 163K. Ran fine, had small oil leak at filler neck. Replaced grommet, washed motor, now will only start when stone cold. If I try to start after running it, even for a short time, it is flooding out and will only start if I hold the pedal to the floor. Then it runs rich and finally will smooth out. Tested ignition module, thinking I got it wet and cracked, tests good repeatedly. Replaced coil packs, no difference. Definitely not spark related.Thoughts? Good car, want to fix...Thanks gang!