HELP!! Camaro only starts cold.
my camaro will only start when its cold and when i do so i have to do a couple cranks to get it started but when its been driven and is hot and i shut the car off it will not start for nothing until it sits for awhile. ive changed the fuel filter, the ignition coil module, oil change, tune up, (theyve all been done by a shop not by me) ive added premium fuel to burn off the "gunk", added fuel injector cleaner, and moisture remover to my tank. this car has many mechanics bewildered i should say. i dont know what else to try, i really need help. another thing i should mention when i take off the gas cap it always blows out air. when the cars been on it will let out hot air always it could have a full tank of gas and it still does it. any help greatly appreciated.