The fuel system 1, wherein {HEAD ~ the throttle valve} comprises a spring urging the throttle valve to a closed position preventing {TAIL ~ fuel} from flowing to the nozzle outlet passage 
The fuel system 1 , wherein { HEAD ~ the throttle valve } comprises a spring urging the throttle valve to a closed position preventing { TAIL ~ fuel } from flowing to the nozzle outlet passage
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH