Dashpot Control System
- Engine must be at normal operating temperature. Check idle speed and adjust if necessary. Remove cap, filter and separator from dashpot. See Fig 1.
- Start engine. Maintain engine speed at 2500 RPM. Plug Vacuum Transmitting Valve (VTV) hole with your finger. See Fig 1.
- Release throttle. Dashpot should be extended and dashpot setting RPM should be 2000 RPM. If idle speed is incorrect, adjust dashpot. See Fig 2.
- To check VTV operation, run engine at dashpot testing RPM for a few seconds. Plug the VTV hole with your finger. Release throttle. Uncover plugged hole. Engine should return to idle in about one second.
- Install dashpot separator, filter and cap. Install filter with coarser surface facing outward.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002