Wow, I just back read all of the posts and thats a lot of stuff. Like someone said, buy the timing light. No ifs ands or buts, just buy it and use it. Now, I have seen this before. One of you fuel injectors may of failed, mechanicaly. This wont set any codes. Its is acutally very easy to test to see if they are both working. On the top of the TB, the injector wires go back and down to the connector. Just trace the 2 wires for each injector and diconnect one wire per injector one at a time. Once one wire is pulled, plug the connector back in and try to start and run it. If it dont run, the other injector is not working. Then try the same on the other injector, just plug the other one back in. This will tell you if they are operating. You will need a small pin to disconnect the wire. Replacing the injectors is actually pretty easy. Just replace them one at a time! Try this! If you can wire a stereo, you can do this.