On Vehicle Inspection

1. INSPECT THROTTLE BODY
- Check that the throttle linkage moves smoothly.





- Check the vacuum at each port.
- Start the engine.





- Check the vacuum with your finger.





2. INSPECT THROTTLE OPENER
- Warm up engine
- Allow the engine to warm up to normal operating temperature.
- Check idle speed

Idle speed: 700 ± 50 rpm

- Check throttle opener setting speed
- Disconnect the vacuum hose from the throttle opener, and plug the hose end.
- Check the throttle opener setting speed.

Throttle opener setting speed: 900 - 1,950 rpm

- If the throttle opener setting is not as specified, replace the throttle body.
- Stop the engine.
- Reconnect the vacuum hose to the throttle opener.
- Start the engine and check that the idle speed returns to the correct speed.