Pull both rubber hoses off the valve cover , and then clean out the holes inside the valve cover .One is larger than the other , and the hole in the small one is very small so dont damage it . I had this problem , just as i was sitting on the stop lights it was just as if it was going to die on me ,, but it never did. And i only cured it after removing the valve cover and gave it a good clean out inside . I can see now its a late post ,,but it could help other members in the future ..