Ok just to give you guys an update of "my problem". I think it was a question of tuning the carburetor, because i put the idle a little faster and now the car doesn`t die when i stop in traffic or in a red light. What i noticed is after time driving when i stop the engine dont sound "straight" it sound like accelarating and disaccelarating but never die.
I tuned by rotating that screws beside the rocker cover, one is more out than the other, i mess with those two but sincerely i don´t know what are they do exactly!

Thank you all

P.S.-I checked all hoses to and they were fine, just suspect the carb gasket is leaking a bit!