David Megginson wrote in message ...

That's a brilliant suggestion -- I'm assuming that you leave carb heat
on, so that there's still an air supply into the cylinders.

Carb heat does not, in the engine installations I'm familiar
with, provide an alternate supply of air to the engine cylinders.

It provides an alternate supply which must still go through the
carb venturi.

If the carb venturi is sufficently blocked so as not to supply
air/fuel in the proper ratio for combustion, it's not clear to
me how injecting more fuel into the cylinders is likely to help.

OTOH, the primer is worth trying because if the problem is really
with the fuel supply, the primer is an independent fuel supply
system and this might help. Might also help suck out a little
more fuel from nearly-dry tanks -- have heard so anyway.

A lot of times IMO people really don't know what the problem
is, unless they have a "carb temp" probe. It's just assumed
that carb ice is a likely cause of engine failure when the
atmospheric conditions are right and there isn't anything
found to be wrong w/ the engine at a later time.

My $0.02
Sydney