Those are interesting numbers. You have high unburned HC, but low CO, and zero oxygen in the exhuast stream. So the fuel that is burning is burning completely and all the oxygen is being consumed. But you have too much fuel for the available oxygen. You would seem to have a mixture problem - either too much fuel or not enough air. Have you checked the air filter element lately to see if it is dirty or restricted? Cars that have sat tend to have rats nests in such places.