Tractor Repair: 1466 injector, reamer, work thanks

Question
I have a 1466 IH. The # 1 injector has air coming from around it. Could you help identify my problem? I pulled injector out replaced it along with new dust cover. Didn't work. Thanks Derek

Answer
 There is a copper washer that seals between the end of the injector body and the injector sleeve in the cylinder head.  If a new washer does not fix the problem, then the bore of the injector sleeve will need to be cleaned up with a reamer or it may need to be replaced.