Can a coil just got out and cause a car to stall and not start?

 

could be. could also be the ballast resistor, loose/broken wire. what makes you think its your coil?

 

because the spark isnt a bright blue, its more yellow.

 

Hows the plug wires ? If you have a multimeter you can test resistance of the coil, ballast resistor etc etc, with power off of course set to Ohms/resistance. Hope this helped, but Iam on the same page with 78D200, check your resistor and ECU.

 

Well i just put in new wires, rotor, dist. cap. and upgraded to electronic ignition.

 

How hot is your coil..voltage output?

 

its not my electrical after all. The carb was dirty and clogged. I opened the carb and now I cant put the plunger back in. How can i put the plunger back in? Its not fitting.

 

read your other post ... but you can also use a small flat screwdriver and poke it in with the other stuff i left in your other post but be carefull not to puncture the rubber but it will go in if you take your time