an injector bore including a guide bore section defined by {HEAD ~ a guide wall}, {TAIL ~ a tip bore section} defined by a tip wall and a conical valve seat disposed between the guide wall and the tip wall, 
an injector bore including a guide bore section defined by { HEAD ~ a guide wall } , { TAIL ~ a tip bore section } defined by a tip wall and a conical valve seat disposed between the guide wall and the tip wall ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH