On Vehicle Inspection

- Remove the V-bank cover.

- Check that the throttle linkage moves smoothly.

- Check the vacuum at port P.
- Disconnect the vacuum hose, and plug port P with your finger.
- Start the engine, and check the vacuum with your finger.

2. INSPECT AND ADJUST DASHPOT.
- Warm up engine
- Allow the engine to warm up to normal operating temperature.
- Check idle speed

Idle speed: 650 ± 50 rpm

- Remove cap, filter and separator from dash pot

- Check and adjust dash pot setting speed
- Maintain the engine at 4,000 rpm.
- Plug the VTV hole with your finger.
- Release the throttle valve.
- E
Check that the dash pot is set.

Dashpot setting speed: 2,500 rpm

- Adjust the dash pot setting speed by turning the dashpot adjusting screw.
- Repeat steps from (a) to (c), and recheck the dash pot setting speed.
- Reinstall separator, filter and cap to dashpot

HINT: Install the filter with the coarser surface facing the atmospheric side (outside).

- Check VTV operation
- Maintain the engine at 2,500 rpm.
- Release the throttle valve, and check that the engine returns to idle in a few seconds.

3. CHECK THROTTLE OPENER
- Check the engine speed when disconnect the throttle opener vacuum hose.

Engine speed: 650 ± 50 rpm 1,200± 200 rpm

- If not at specified speed, adjust with the throttle opener adjusting screw.
- Reinstall the vacuum hose to the throttle opener.