Originally Posted by YVR Cockroach

I used to live in Tahoe at about the 6,600' level. If I had high octane (for up there) gas in my old carburetted truck (required it as it was running nearly 11:1 compression) on cold mornings, I had to prime the carb, let the gas evaporate for about 10-20 seconds, then crank the starter otherwise the gas wouldn't evaporate and the engine wouldn't start.