Thank you, Randall and Barry, for your cold-weather stalling answers. I
was driving home after picking up carry-out when my '66 Volvo wagon
(with SU carbs) stuttered and stalled as I exited the highway. I thought
"that must be lean" but now I can think to myself "fuel doesn't mix
thoroughly with the cold air and large droplets don't burn as well. The
droplets of fuel also have a tendency to settle out, and there's also
the problem that carburetors mix fuel & air based on volume, while the
optimum mixture is determined by relative masses. Cold air is denser and
so the mixture goes lean when the carb is sucking cold air."
I'll also think I should order one of those radiator curtain the swedes
offered as an option 40 years ago.
--
Steven Newell
Littleton, CO
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