Having trouble pulling fuel from the tank to the filter. New filter and fuel pump. I can take the filter off the line from the tank, put a piece of fuel hose on it and put it my gas can and it will pump fuel. But when I hook the filter back up to the line coming from the tank, it will not pull fuel. I blowed air back thru the line to the tank and I can hear it moving the gas around. Their is a 1/4 tank of fuel. Any ideas/suggestion on what the problem might be, will be greatly appreicated.