Aspaton 4 Barrel Carburetor for Rochester Quadrajet 4MV 1904R 1906R Carb Vacuum Secondary 750 CFM Compatible with 1980-1989 305-350c.i.Engines Electric Choke W/Gaskets Jets

Features

• Fitment: Spread bore carburetor, more suitable for daily drive.Carburetor Fits For Carburetor For 1904R 1906R Rochester Quadrajet 4MV. Directly replacement 4-BBL carburetor replace for 4MV 1904R - 1980 cars, 1904-GG 1906-GG 600 CFM-800 CFM trucks 1981-1986. Most are rated 750CFM.
• Replace Part Number: Compatible with 1980 cars or trucks with electric choke, use #1904R 17066422 17066425 17066432 Auxiliary Venturi: 7mm, Venturi(Choke tube): 31.7mm, Main jet: 190, correction jets: 190, Idle jet: 120（Designed no clips on the needle）
• Function: Designed to replace worn fuel system components which can provide the car optimal performance and fuel efficiency (Designed no clips on the needle). Package Including 1x Carburetor, 1 x Flange gaskets, 1x Atmosphere strainer gaskets, 1x Tool for pushing plug, 4x Plugs, 8x Jets; installation instructions not include.
• Precautions and troubleshooting: Impurities may block the oil pump filter screen and affect the normal supply of fuel. Before installation, the fuel tank should be cleaned; Idle speed problem: check whether the idle speed screw is fully retracted. If it is fully retracted, it will not turn and there will be no idle speed. You can adjust the idle speed screw and the mixed gas screw to see if that solves the problem;
• Precautions and troubleshooting:The needle valve controls the flow of fuel into the fuel bowl. If it is dirty, blocked, or stuck, it may allow excessive fuel to pass through, check the needle valve and valve seat. Remove any debris and dirt that may clog the valve. It is recommended to check the tightness of the connection and conduct a vacuum leak test. Strongly recommend finding professionals for installation！