Nickajack910

Hi everybody. Have a XTL that used to belong to IBM with shelving, window cages, etc. Have replaced coolant recovery bladder that was split and recovery hoses. Now have a situation where coolant system has puked antifreeze drivers side when parked on driveway, substantial amount, then won't do it again. Think it has original radiator hoses, for which I just bought replacements, but not put on yet. Any ideas? Pressure test the system?