Dashpot: Testing and Inspection

- Warm up engine
- Allow the engine to warm up to normal operating temperature.
- Check idle speed

Idle speed (Transmission in neutral): 700 ± 50 rpm





- Check and adjust dash pot setting speed
- Push the dash pot rod all the way with a screwdriver, and confirm the dash pot setting.

Dash pot setting speed: 1,800 ± 400 rpm

- If not as specified, adjust with the dashpot adjusting screw.
- Check VTV operation
- Maintain the engine at 3,500 rpm.
- Release the throttle valve, and check that the engine returns to idle in a few seconds.
4. INSPECT THROTTLE OPENER
- Warm up engine
- Allow the engine to warm up to normal operating temperature.
- Check idle speed

Idle speed (Transmission in neutral): 700 ± 50 rpm





- Check throttle opener setting speed
- Disconnect the vacuum hose from the throttle opener, and plug the hose end.
- Maintain the engine speed at 2,500 rpm.
- Release the throttle valve.
- Check that the throttle opener is set.

Throttle opener setting speed: 1,500 ± 400 rpm

- If the throttle opener setting is not as specified, replace the throttle body.
- Reconnect the vacuum hose to the throttle opener.