Toyota Repair: Hard to start, air fuel mixture, rich mixture

Question
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I have a 1985 toyota supra and its hard to start whin it's at runing temp. i have replaced the {cold start time switch, plugs,wires,cap,R butten,Air fillter,fuel fillter}and it's not helped with the hard starting problem at all but it did fix the cold start problem. I dont no whot ells to try can you help me?


Answer
After the engine is shut off after being at operating temp, how long does it take to finally start?
Is there any black smoke from the tailpipe?
The engine needs a lean air fuel mixture to start when hot so one possibility may be that the cold start injector may be leaking and causing a rich mixture causing a flooding condition, the cold start injector always has fuel pressure applied to it so that is a possible cause.