What is the purpose of the idle mixture screw on a four-stroke engine with a carburettor? How is it adjusted? - Quora
![1976 Corvette Stingray: Restore, Repair, Detail: Quadrajet Tuning: Adjusting the Idle Mixture Screws 1976 Corvette Stingray: Restore, Repair, Detail: Quadrajet Tuning: Adjusting the Idle Mixture Screws](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhrQk5WrNhp99QyaobK1mDaSDUJaMZKfcbYchEMKkkRl37VMCN6n5zfrOAigRLLOw1g55A9XBtv0ziAT8538oPyxz65-c7qp2Db8uH8rd_Y3_P-MW09Uv3pnOWk5_R8EZhxwYDUy5RMtIs/s1600/carb_before_and_after.jpg)
1976 Corvette Stingray: Restore, Repair, Detail: Quadrajet Tuning: Adjusting the Idle Mixture Screws
![Amazon.com: Air Fuel Mixture Screw CNC Adjust Carb FCR Air Screw Compatible with KEIHIN Carburetor Four-Strokes FCR Carbs Motorcross Motorcycle(blue) : Automotive Amazon.com: Air Fuel Mixture Screw CNC Adjust Carb FCR Air Screw Compatible with KEIHIN Carburetor Four-Strokes FCR Carbs Motorcross Motorcycle(blue) : Automotive](https://m.media-amazon.com/images/I/612xJqZG-ZL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Air Fuel Mixture Screw CNC Adjust Carb FCR Air Screw Compatible with KEIHIN Carburetor Four-Strokes FCR Carbs Motorcross Motorcycle(blue) : Automotive
![Carb Mixture Screw, Carburetor Adjuster Screw, Motorcycle Air Fuel Mixture Screw, Universal Air/Fuel Mixture Screw Adjuster Compatible with Honda ... Carb Mixture Screw, Carburetor Adjuster Screw, Motorcycle Air Fuel Mixture Screw, Universal Air/Fuel Mixture Screw Adjuster Compatible with Honda ...](https://m.media-amazon.com/images/I/711ioyRuyPL.jpg)