starting problem

ok i need help, i have a 1990 integra LS .....now i have been having some starting problems 1) it takes time to start from cold turkey but onces it starts it doesnt stall which is good for me, but the next time i start it and if i dont get it started at the first go then i have to wait for abt 20 mins before its starts. the engine cranks fine though, i thought it might be an icm problem so i changed it but still no change. i desperatly need some guidance
thank you in advance
ausyed