tractor has to crank for a while after it sets more than a couple days, I put a fuel valve in line before fuel pump . Didn't seem to make a difference. Can hit it with some starting fluid and it fires right up, but it takes a couple squirts to keep it running till it picks up fuel. It takes a couple days setting before I have to start it like that. One piece of information, if I fill the take up it leaks fuel from somewhere but doesn't seem to effect how it starts. As long as you start it every day it runs fine. Where to look ?