After putting gas my car hesitates sometimes bogs out upon starting

Ill try replacing the purge valve itself hopefully it solves the problem. If problem still persists ill take it in and get the emisions scaned. Pushrod also i noticed that when i rev the engine the rpm's suddenly cut out at about 45k rpm's. Not like the engine wants to die out or anything it just seems as if it is limited to a certain rpm upon reving in park. Never seen this knd of activity with any of my cars as i can red line the rpm's in them but not my impala. Not sure what can cause this except for something within the emission system. Can this be related to a stuck purge valve aswell?