I have a temp related electrical (injector system?) starting problem. If the car is driven for about 10 minutes or more and is shut off for 10-30 minutes it probably will not start (cranks only). If I unplug an injector the car fires up and runs fine once the wire is reconnected. Or if it is left for 30 minutes or more it will start. I have replaced the main relay; fuel pump; complete distributor; ignition coil. I have a parts car so have all parts available. Any suggestions? Please.