Carburetor idle jet venting device

In a device for bleeding ambient air into a carburetor idle fuel port, the device, including a vacuum responsive check valve which opens upon the occurrence of above idle vacuum pressure, the improvement comprising:

• an elongated hollow body having an axially oriented continuous passage extending between first and second ends;
• said body having threaded engagement means on said first end for engaging said idle fuel port;
• a washer-like plug positioned within said passage and forming a valve seat including an outer annular planar surface and a centrally disposed conical portion surrounded by said planar area;
• a slideably disposed valve element including an axially-oriented stem and a transversely extending generally planar head, said head having inner and outer surfaces, and a compression coil spring surrounding said stem and bearing upon said inner surface;
• said outer surface of said head overlying said valve seat;
• whereby, when said valve element is in closed position, sealing is effected solely by the contact of said outer surface with said planar area of said valve seat, and upon the opening thereof, only minimal axial displacement is necessary to provide substantial venting action.