You want to try to narrow down why it doesn't start. A car needs 4 things to run: 1- Compression 2- Air 3- Spark 4- Fuel.
If the car runs good when its warm, compression is not a problem.
If the car has a problem with airflow, it would start hard in all temperatures.
It CAN be a spark problem, but the chances of it are next none. The easiest way to check spark is to remove one of the spark plug wires, stick a screwdriver into the wire, lay it across a chassis ground point, and turn the key. Have someone watch for spark.
Fuel could also be a problem. It takes more gas to start a car when its cold or damp out, so it could point to a weak fuel pump, or the cold start valve.
Thats about all I can tell you right now, I'll see if I can think of anything else.
I hopes that helps a little.
-Jason
