When its around zero degrees out my car will start but run for a second and die as if its running off of fumes (When its around 15 degrees or so it'll start fine on its own) it'll continue to do this untill I apply a little bit of gas and then it fires right up. What I've done lately is prime the fuel pump, push the accelarator a little, then crank it and it starts up fine but I'm worried I might have low fuel pressure. My tank is holding pressure fine because I can hear it escape when I take the gas cap off. Any ideas would be helpful. TIA

The Car; 1990 civic std, 155K. MPFI swap performed in may and a used gas tank installed last Feb. otherwise I just installed a new fuel filter and it has newer ignition parts. It also has a gutted cat and the timing is set to stock.