Looking for info on the injector test adapter I will need to order before testing compression on a 96 JD 690ELC excavator If you have info on what is needed, please reply. Engine is a 6068T K line makes a AT3600I that is for JD pencil injectors. The model numbers they reference don't match mine though. I'm told all pencil injectors are the same diameter though. Planning on using a Snap on tester with this adapter. Also - anyone know what safe compression levels I should have on a non damaged engine?
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