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 MANUALSCHEVROLET1987NOVA BASE, 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISCARBURETOR - AISAN 2-BBLOVERHAULDISASSEMBLYMAIN BODY
1987 Chevrolet Nova Base, 4D Sedan, Automatic
Main Body
1987 Chevrolet Nova Base, 4D Sedan, AutomaticSECTION Main Body
- Remove primary and secondary solenoid valves. Disconnect throttle positioner actuating rod. See Fig 1 . Remove 2 throttle positioner mounting bolts. Remove stopper gasket, pump discharge weight, long spring and large discharge ball. Using tweezers, remove plunger retainer and small ball.
- Remove slow jet. Remove power valve with jet. Disassemble power valve and jet. Remove "TP" levers. Remove primary main passage plug, primary main jet and gasket.
- Remove secondary main passage plug, secondary main jet and gasket. Remove AAP housing, spring and diaphragm. Remove AAP inlet plug and small ball. Remove outlet plug, short spring and small ball. See Fig 2 .
- Remove primary and secondary venturies. Remove sight glass retainer, sight glass and "O" ring. Remove throttle lever and fast idle cam assembly.
- Remove throttle return spring, throttle back spring, throttle lever and fast idle cam. Remove secondary throttle valve diaphragm assembly and gasket. Remove 3 mounting bolts and vacuum passage bolt. Separate body and flange.
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.