Carburetor: Testing and Inspection

VSV Open Test:

1. Connect one VSV terminal to battery positive. Connect the other VSV terminal to battery negative.

2. Blow into pipe, ensure air passage is clear and unrestricted.

VSV Closed Test:

3. Disconnect battery positive from VSV terminal.

4. Blow into pipe, ensure air passage is closed.

5. If VSV operation differs from above, replace VSV.

VSV Short Circuit Test:

6. Connect an ohmmeter to VSV positive terminal and VSV body. Ensure no continuity exists.

VSV Open Circuit Test:

7. Connect an ohmmeter between VSV terminals. Measure resistance.
Resistance Value 38 - 44 ohms @ 68°F (20° C)

8. If continuity exists between positive terminal and body or resistance value is not within specifications, replace VSV.