Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1966BEL AIR NOT AVAILABLE, 4.6L ENG, NOT AVAILABLE TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEFUEL DELIVERYCARTER AVS 4-BARRELOVERHAULDISASSEMBLYAIR HORN
1966 Chevrolet Bel Air Not Available, 4.6L Eng, Not Available Trans
Air Horn
1966 Chevrolet Bel Air Not Available, 4.6L Eng, Not Available TransSECTION Air Horn
- Disconnect pump rod from pump lever and choke rod from choke kick lever on choke shaft.
- Disconnect vacuum break hose at carburetor, remove vacuum break diaphragm attaching screws and remove vacuum break assembly. Disconnect vacuum break link from lever by rotating the assembly.
- Remove two power piston and metering rod cover plates on air horn, remove power pistons, metering rods, and power piston springs.
- Take out air horn screws, carefully lift air horn off body to avoid damage to floats and pump plunger. Remove fuel inlet fitting, fuel filter, spring, and gaskets. Remove float lever pins, remove floats, inlet needles and seats, and gaskets. Keep parts for each float separate.
- Take out pump lever screw and remove lever, disconnect "S" link and remove pump plunger. Place pump plunger in kerosene or gasoline to prevent plunger leather drying out.
- Do not remove air valve or choke valve unless damage or wear noted which requires replacement of parts. To remove air valve, remove air valve retainer and spring, remove valve and slide shaft and bushing out of air horn. To remove choke valve, remove lever from choke control shaft, remove link lever screw, slide control shaft out of air horn. Remove staking from choke valve screws by filing screw ends level with shaft, remove screws and choke valve, slide choke shaft out of air horn.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.