This came up this AM, after flattening my 2nd and last Jump Start battery pack on a friends Corvair. He used a fair amount of starting fluid before it caught (Northern California is in a cold rainy snap right now) He's likely got bad ignition wire insulation, and the carbs are screwed up.
And I know for our Listeroids, ether is off the list, Regular Unleaded Gasoline (RUG) is used to thin diesel for cold weather flow and gel resistance.
What about a couple drops of RUG in the air cleaner, to get some vapor into the chamber, will that help starting?
I don't know if I have enough hands to hold the propane torch, crank the flywheel and trip the decompression lever at the same time in cold weather. (Hot air injection)
We've got some time before it gets chilly here, just asking now.
Mike