I have a suzuki f5a db71t and have been having problems with it latley that seem to be fuel related. I've dropped the gas tank cleaned and replaced all fuel lines and new fuel filter. Truck cranks and idles perfect but after about 5 minutes of running or so it will act as if it is starving for fuel and I will die out. Let it sit for 20 minutes or so and it'll run great for about anothe 5 minutes then repeat the same problem. Would this be something in carburetor that is lodged or would it be something with the mechanical fuel pump. Any help is greatly appreciated.