2. Disconnect the choke heater two-pin connector.
3. Open and close the throttle completely, allowing the choke plate to close completely.
4. Start the engine, the choke plate should partially open.
5. Check the gap between the choke lever foot and the carburetor body.
Choke lever foot
6. Allow the engine to warm up to at least 25°C.
7. In this case, the choke lever foot should rest on the carburetor body.
8. Otherwise, disconnect the vacuum tube from the valve "A" choke opening mechanism, connect a vacuum gauge and check for vacuum in the tube "IN".
Choke release valve
9. If you are convinced that there is a vacuum in the tube "IN", then connect the vacuum pump to the tube "WITH" valve of the air damper opening mechanism, create a vacuum in the valve and make sure that the draft "D" The choke opening mechanism moves completely.
10. If the air damper opening rod moves normally, check the serviceability of the thermal valve.