I got a 86 305 4 banger. rochester. It has a knock sensor but no est module. No aldl connector. no 02 sensors. Basic 4 bblelectric choke vac. advance, egr, early evap sys. I've adjusted the air fuel mixture, and the choke.Timing ok, got better, but Still very lean burning. This thing burns your eyes. Runs very well but can't get rid of the smell, any ideas on the system i've got and a fix to this?