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.
Altitude COMPENSATOR
The altitude compensator is used for compensation of the air/fuel mixture in response to the elevation by means of supplying additional air to the control air passages.
Below 4000 feet (1200 m) the altitude compensation system does not operate because the air passage in the altitude compensator is automatically closed by the needle valve within the compensator.
Above 4000 feet (1200 m) the bellows in the altitude compensator is expanded and then the lever pushes the needle valve to allow additional air passages to open the control air passages. Air coming into the carburetor through the altitude compensator is metered and supplied to the control passages. This compensates overall air/fuel mixture of the carburetor. See Fig 1 .
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.