Ok the descripsion may not be the best cuz i was blastin music.. so bare with me. I left a friends house maybe 5 mins from my house and was driving through the publix parking lot (short cut) at bout 3500rpm and i heard like a popping noise (maybe backfire but not sure) and that was last night and its still sitting in the publix parking lot .. It will turn over but not crank up. Things i tryed: All the spark plugs spark. sprayed starter fluid in the intake. did a bunch just cant name all what i did. BUT GUYS PLEASEEEEE HELP ME, what could it be????????????

what does it do when it turns over... DOES IT TURN OVER ??? does it just keep cranking and cranking or what ???
I would suggest checking ALL vacuum lines .. if it does turn over... turn it for a bit (if it's not catching)... then smell (YES, smell) the exhaust pipe... if it smells like gasoline then you have fuel pumping and look for another problem... also check your fuses... ALSO... if it's an automatic... try it in Neutral... if there is any loud tapping or ticking when it's turning over... stop
thats about all that I can think of for now... if you have any other info on what it's doing or how it stopped... let me know, I'll try to help// Good luck

hmm broken timing chain maybe? do the valves open and close?