Starting problem tonight

I drove to work this morning, no problems at all. Came to start her at 7 pm and she wouldn't start. There must be some compression, as every now and then she fires, but not enough to get her going. Everything seems to be connected lead-wise. I kept trying until I'd flooded her. She's a 3.9 EFi V8. Any ideas, please?

if there was no catastrophic noises prior to it not working i would say some kind of connection is off, maybe even coil gone, check inside dizzy see if anything has broke?