Here in Toronto it is -4C or -10C with the wind chill, I am
not sure what that is in degrees F but trust me its cold. I
have been having this problem for a while and today it
finally gave up.

I can hear the van turning over but it doesn't "catch". If I
keep my foot on the throttle and keek the key turned to
start the engine almost, but doesn't quite, start. When it
was slightly warmer the same thing was happening but it
would eventually start.

Any ideas?

Thanks,
Chris