i'd clean your injectors and check the cold start valave. not sure on cleaning but i'd assume you can. take the hoses off and shoot a little carb/choke cleaner through it and let it dry out. put it back in and see what happens. injectors you may not notice holding your car back while running but will definitely make starting an issue if combined with other minor issues.
better description of what happens would be good, ie. does it just crank, does it sound like it wants to turn over but won't kick,...etc