Ok heres the problem when i turn the car on it takes time and I can smell gas vapor big time coming from the engine and when im the freeway The vehicle engine runs rough and often stumbles and sputters? what could be the problem

 

check all the fuel lines going to the rail and injectors, i would also check the fuel preasure

 

I have the same problem I checked my fuel line's but no cracks or leaks wtf

 

What about your carbon canister? Smell fuel there? Also , check the check valve around your gas tank. It is a small white plastic valve. Check your spark plugs to see if you have leaking injectors. You will smell and see fuel on them.