Hi guys, I recently had the engine replaced in my car. Before, when I had the old engine,, I would be able to crank it just a couple of times and the car would fire up. But after the engine replacement, the car seems to have a hard time starting up when its cold. When the car is at normal operation temp, and I try to restart, it will crank right over. I usually wait a few seconds to prime to fuel but that still doesnt work. Most of the time, I have to pump the gas pedal to get it to start.

I want to get this fixed but I am unsure on where to look to find the solution. I was thinking about buying a check valve for the gas tank but that seems to only fix vapor lock and hot starting problems.

I need to figure out how to get my car started quickly when its cold? any tips?