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 MANUALSCHEVROLET1966BISCAYNE 7.0L ENG, AUTOMATIC TRANS, TRANS MFR CD THM400REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALFUEL SYSTEMROCHESTER 4GC 4-BARRELADJUSTMENTFLOAT LEVEL (METAL FLOATS) (PRIMARY & SECONDARY)FLOAT HEEL
1966 Chevrolet Biscayne 7.0L Eng, Automatic Trans, Trans Mfr CD THM400
Float Heel
1966 Chevrolet Biscayne 7.0L Eng, Automatic Trans, Trans Mfr CD THM400SECTION Float Heel
With air horn inverted and air horn gasket in place, check height of each float at "heel" (see Figure). Distance should be as indicated in specification table. To adjust, bend float arm at point shown in illustration.
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.