I have a problem starting 2000 Grand Prix with the 3.8L (K) Engines. Drove it in the garage and the next day it would not start. It turns periodically while trying to start one or so cylinders will fire but will not start. There are no codes, code reader states good to go. While working on the car I added new wires and plugs. The fuel gage was at an 1/8 of a tank, the fuel pump did not run until I replaced the vapor canister purge valve. Now have fuel pressure up to the injectors. Also added 6 gallons of gas just in case the fuel lever is incorrect. Spark check looks good. Kept the car with heater overnight just incase the fuel line was froze. Any help would be greatly appreciated.