my vienta runs like a new one and is great on fuel...BUT..even when the car has been driven for a while and then sits for longer than a few minutes it becomes difficult to start....by that i mean it winds and winds,i back the key off and turn the key again and finally it will start but idles up roughly and blows fuel smoke smelling rich as. i assume its over fuelling on start up and im thinking fuel pressure reg... would i be close in my assumption? any suggestions would be great. cheers guys.