signs of cold start going out ?
 

i was curious because the pass few days Ive experiences this in the morning. So as i start the engine it takes time to kick over and when it does kick over it acts if it doesnt have enough fuel and gives a sound of wanting to give out . when i adjust the idle on the car at a higher rpm its runs fine afterwards then during the day after its been running for awhile i re-adjust it back to 700rpms and runs fine as well ? also its a 79 280zx n/a 3speed auto. ps is it called " cold start injector " or "cold start valve" sorry trying to learn the part names to give a better understanding

Hard starting can mean low fuel pressure. Have you checked the fuel pressure?
Have you done the cold start / thermotime switch tests outlined in the FSM?

no i havent but how would i test the pressure ?

#1: Download the FSM: XenonS130 - S130 Reference

#2: Obtain a fuel pressure gauge (most auto parts stores rent / sell them).

well i went to auto zone to see how much to rent the fuel pressure kit and they want 150! so i'll have to wait till this Friday. Also when i get ready to leave in the morning its around 35-50 degrees

instead of renting one could i install an electronic fuel pressure gauge ? i mean i wouldnt mind paying more for that then to just have a tester

Wow. Advance Auto Parts have them for less than $20. Don't know if there are any of their stores up your way though.