You know you are getting gas and you know you have spark. There are several thngs that can stop you dead with the kind of injection sytem that you have (CIS). If anything gets into the area where to flowmeter flapper is located, your engine will fail to start. The the throtle postion pot. is extremely sensitive and if out of adjustmet will cause some of the problems that you list. However, it could be the fuel pump, filter regulator etc. You may get lucky or you may have to get a manual and go on a "witch hunt"