From what I've read, the combustion chamber has to reach a certain temperature to cause the raw fuel to start vaporizing as it's being compressed. My own readings have indicated that my engines don't get anywhere near as hot as is necessary to accomplish this. ABC engines also need to keep their cylinder temps high to allow for proper expansion of the piston/cylinder assembly. I don't experience real low temps here, and I fly regularly in the winter. The most I have trouble with is the first start. After that, it's no big deal.

Jesse