Hello:
Goto http://www.stovebolt.com/bboard/cgi-bin//ultimatebb.cgi?ubb=get_topic;f=2;t=011641
I had the same thing happen to me afew days ago. With the help of others members I was able to have her running again. In my case, I had a bad coil. Just a simple replacement did the job.
If not like some one said: It is eather spark, fuel or timing.....
Have fun!