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.
Air Intake Control System: Description
The air intake control system is a thermostatic air cleaner assembly which maintains a uniform air temperature of air entering the carburetor. This temperature is maintained in a narrow range (approximately 95-100°F/35-38°C), regardless of outside air temperature, to permit finer tuning and balancing of the carburetor. This helps control hydrocarbon (HC) and carbon monoxide (CO) emissions and permits better fuel atomization for more complete combustion.
The air intake control system consists of the air cleaner, an outside air intake hose, a hot air hose, an air control diaphragm, a temperature controlled air bleed valve, an air control valve door, and a combined vacuum check valve and fixed orifice.
Use the Manual With the Right Hardware
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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.
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