Should I buy 98' Infiniti I30 134k miles which declared as total loss vehicle before?

hi, i'm having a hard time to decide whether i should buy '98 infiniti i30, 134k miles for $4000. the major problem is when i look up on carfax.com, the car was declared total loss but no salvage/junk/rebuilt title, which is, confusing. What could possibly be the reason for a car declared total loss without having salvage/junk/rebuilt title?