i've had my Z for 3 going on 4 years and this is the first bit of trouble i've had. it was running great nothing was wrong temp always stays around 200 even in hot traffic. I went to start it a couple weeks back and i noticed its lag to start and its mildness on the power side of things figured it was just a bad day for it so i took her home and back in the garage. About a week later me and some friends were going to go on a cruise up the Blueridge Parkway. When i got ready and was about to leave the car refused to start. We figured i wasn't getting suffienct fuel so i replaced the pump with no result. We then tried replacing pluges and wires. When i put the new plugs in we checked to make sure i was getting spark. Which i was but it was white not blue like it should be. the car wants to start you can hear her and feel her shake. Any ideas would be greatly admirred. plz try to help me

Jeff