my 81280zx non turbo starts right up and dies in 2 or 3 seconds. won't start again for a few minutes and then will start up and immediately die again. the fuel pump checks out fine, the injectors are good, plugs are new, cold start valve is good, the TPS is fine. I pulled the coil wire out of the dist and I am getting a yellow spark. could this be my whole problem or should i look elsewhere 1st? Thanks for any help you can give.