2001 Honda Accord VP won't start
 

Our 2001 Honda Accord VP won't start this morning (our first cold day ~
20 F). It did this a month ago and I thought it was the timing belt.
Took it to the shop and had it replaced. The mechanic said the belt
was loose but not broke- I had it replaced anyways because it was due.
It turns over but seems like the pistons aren't firing or not getting
gas. Yesterday when I started it with the headlights on, it churned to
get going before it finally started. Any ideas what to check for?