In late May, I had the carb. on my cobra professionally rebuilt. (1961-62, 780 Nascar Holley w/center floats. The rebuild was perfect, I installed it an she started right up. I had only had to up the idle rpm by 200. The car ran great. no fuel/carbon smell , it fired right up each time the key was turned. Tonight, in anticipation of an after work cruise. I started the car and noticed a slight
rougher than normal idle and I observed the tach bouncing but the engine not really increasing or decreasing rpm as the tach indicated...and yes I installed a new nosinger tach when the MSD ignition was installed. I shut it down and checked for an obvious problem (vacuum leak etc. I also tapped the float bowls to perhaps unstick the floats if it were stuck. No luck, the entire garage (not to mention my home smelled of carbon setting of every detector we have ..I drove the car not less than 2 weeks ago and it ran well.... Help...any Ideas?
