The mule is hard to start and then seems to be clearly starving for fuel. Unlike my Gator with the Kawasaki engine this fuel pump on the Mule doesn't make a sound when I turn the key on whereas the Gator fuel pump starts humming and pumping fuel. When I remove the fuel line and turn on the key fuel doesn't start pumping but when I turn it over fuel slightly pulses out of the hose as the engine turns. Should the pump on this model start pumping as soon as the key is turned on as the Gator does?