Did you ever figure out your issue? sound exactly like mine...Sorry to hijack, but I also have a similar problem. I think it may be the CAS but my car wont start. I know I'm getting spark, and the engine bay smells like gas whenever I try and start the car. The car cranks fine and very strong but no start. Every now and then if I try and start it, I get a loud pop from the exhaust like a backfire.
Edit: I also noticed that a few days before the car wouldn't start, it would crank longer to start the car. Like one day it would only take a second after cranking to start up, the next day it would be 3 seconds, then the next day it would be 5 seconds. And then finally it just didn't start.