{TAIL ~ A fuel injector} is positioned along the side of the engine and arranged to deliver fuel into {HEAD ~ air} flowing through the passage 
{ TAIL ~ A fuel injector } is positioned along the side of the engine and arranged to deliver fuel into { HEAD ~ air } flowing through the passage
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH