leaky fuel injectors

[bump'n240]

hey guys i got my new 240 and i love it just started to work on it today.. well heres the thing i noticed this strong smell that was coming from uner the hood i can smel it inside the car... its gas and my buddie told me it may be a leaky fuel injector.. just wondered if that is commen and will be ok.. or shoudl i get a new seal.. i dotn kow how hard they are to repalce... by the way i have a 90 240 sx hatch...
thanks
Brent