My 86 240 is normally very reliable, however with the recent cold weather I'm having problems getting it started in the morning (-20 C). It's normally been parked in a garage where I've had no problems with it. Recently I've been parking it outside and in the morning, it starts like a charm, but then stalls seconds later. Re-attempts seem to fire on only 1 or 2 cylinders. If I keep cranking, after a couple of 30-second attempts it will typically start firing on more cylinders and then kick in and run fine. Throughout the rest of the day it starts fine, until the next morning. I replaced the ignition wires thinking it might be moisture related (from being outside of the garage) but this did not help. I was going to do the cap, rotor and plugs also, though I don't feel this is the problem. Any ideas?