Note: The information in this Chapter applies to vehicles with an automatic choke. For manual damper data, see. v Section 4.
1. The choke only works when the engine is still cold, so the check should be performed before starting a cold engine.
2. Open the hood and remove the upper air cleaner assembly plate. It is secured with a wing nut and three clamps.
3. Look at the carburetor in the center of the air cleaner housing. In the carburetor hole you will notice a plate - this is the damper (photo).
4. Ask an assistant to press the gas pedal all the way down. The damper should close completely. Start the engine while observing the throttle. When starting the engine, the air damper should open slightly.
Warning: Do not touch the carburetor as the engine may backfire and cause serious burns.
5. Let the engine idle. Once the engine warms up to operating temperature, the plate should slowly open, allowing more air to enter the carburetor.
6. After a few minutes, the air damper should open fully (stand upright).
Based on website data [MAZBOOK]
7. Inspect the contact surfaces of the air damper shaft (the engine is turned off) for the presence of deposits that could interfere with the rotation of the valve. Use a special aerosol throttle body cleaner, available at auto parts stores, to clean the throttle body shaft (see illustration), by turning the damper rod manually.
8. Apply aerosol lubricant, also available at auto parts stores, to the contact surfaces of the shaft. Turn the rod to ensure that the damper turns freely.
Remove the air filter and check the operation of the air damper
9. If a malfunction is detected during the above check, see Section 4.