Mazda 3 code p0455

What is your question?

hi i have a mazda 3 2004 and my car is running lean the code is p0455 major evap leak, i changed the purge valve and the gas pump with the lock and the car is still running lean, so i changed the o2 sensor just in case but still runs lean at idle, i tried to look for leaks so i sprayed carbulator cleaner to check leaks and found nothing, all the i/m readiness are ok except evap anyway to tell what it is?