Abstract: An internal combustion engine equipped with an exhaust gas recirculating system is provided. The exhaust gas recirculating system comprises an EGR valve normally closing an EGR duct to prevent recirculation and movable by a signal vacuum applied thereto to an open position and control means operable to provide a signal vacuum. The control means includes a vacuum line connecting a vacuum port communicating with the carburetor throttle bore above the idle speed position of the throttle valve to the EGR valve, air bleed means including a vent in the vacuum line and flow restricting means in the vacuum line fluidly intermediate the vacuum port and vent.