opening 81 in which valve stem 80 is disposed the cooling fuel that is supplied to the load screw reservoir 92 seeps down the sides 83 of valve stem 80 to the high pressure leak split spot 20 the high pressure leak split spot may often be the hottest location within the fuel injector 10 by routing low pressure cooling fuel directly to this location thermal load control within the injection 10 is effectively and efficiently managed excessive heat from the high pressure leak split spot 20 is transferred to the low pressure cooling fuel that is supplied thereto this low pressure cooling fuel then travels through a radial passage 94 to an annular clearance 96 which may be defined as the space between the injector body 36 outer edges of the upper valve body 68 lift plate 70 and lower valve body 72 the radial passage 94 and annular clearance 96 are in fluid communication with drain passage 64 thus the low pressure cooling fuel is ultimately drained out of injector 10 through drain passage 64 and drain outlets 66 radial passage 94 carries low pressure cooling fuel away from the high pressure leak split spot 20 it is thus sized to effectively carry away at least as much mass flow of cooling fuel as is provided thereto additionally radial passage 94 may be formed in a variety of manners so long as it provides fluid communication between the low pressure fuel inlet 90 the high pressure leak split spot 20 drain passage 64 and drain outlets 66 for example as depicted in fig2 3 5 and 6 the lower surface 98.