I posted before about my tractor .. I replaced the fuel pump and it acts like its being choked out or starving for fuel once it gets warmed up and its hard to start now all the time and wont stay runnning .But when it is running it runs perfect... I removed the fuel line and turned it over and had no fuel coming out.. Some times it does other times it dont jus a few drips.. Does this run off vacuum? Whats the lower line lead to?Is the hose coming from the tank gravity feed or not? If I remove the filter should I have lots of fule pouring out or jus a lil from whats already in the line?