ORIGINAL: DarZeelon
If you use gasoline/petrol in your glow engine, it will run ONLY when the battery is connected to the glow plug. The engine will shut down as soon as you remove the plug driver, despite the higher burn temperature of the petroleum fuel.
Dar, check this out [link]http://www.rcuniverse.com/forum/gas_fuel_with_glo_plug_no_ignition/m_1267448/tm.htm[/link]
gas can be run without a battery connected to the plug...i guess idle is still a prob but i'm sure it could be worked out. do a google on "smart plug" and you'll find some interesting reading: a glo plug type thingy designed to work on full scale aviation engines running gas, battery power needed only for starting!
dave