2011hyundai accent hard to start car after putting in gas

This could be an issue with the throttle body or sensor. You could also have low fuel pressure or an engine sensor not reading properly. Many possibilities so a hands-on inspection is needed. Use this link to find a good shop near you. https://repairpal.com/repair-shops Alex

Common for a purge solenoid valve to be the source of this problem. usually cheap and easy to change.