I have run into a problem with no power shortly after start up. Like it is not getting fuel. Runs fine at idle but falls on its face when I pull out the drive. Have driven it as far as two miles and it never works out. I pull to the side of the road, shut it down, restart, and everything is just fine and dandy. Each time the air temp. has been below 32. As low as 5. Does it with a long or short warm-up. Is this the start of the dreaded lift pump problem?