All Navistar Engines have a flow chart diagnostic sheet for no start and hard start. These will help you in diagnosing your problem. We require that these be filled out before any major engine parts are replaced.
For VT365 the part # is EGED-245
For MF7 the part # is EGED-355-2
For DT466 the part # is EGED-290-1
MaxxForce DT, 9, and 10 Hard Start / No Start Diagnostic Form EGED-375
ALL OF THESE FORMS ARE IN ON COMAND OR COPIES ARE AVAILABLE AT CBS MACHINE SHOP