1986 supra problems
 

I have a 1986 supra and when the engine is cold it starts and runs great and will keep running well until you shut it off then restart it. on restart it runs rough and continues to runs bad until you shut it off and let it cool down?! I have pressurized the coolant system and found no leaks (I.E. head gaskets) Not too sure what you guys might think is the problem?? no smoke out the exhaust and doesn't seem to be running rich (no smell of fuel out the exhaust) also I have put in new cap rotor plugs and wires
any help would be great! thanks Brian

just a thought
 

i know there is no smoke but it could be cold start injector