Dashpot Control System
- Warm engine to normal operating temperature. Ensure idle speed is within specification. See IDLE SPEED & MIXTURE in ADJUSTMENTS
article.
- Disconnect control cables from throttle body. With engine idling, use screwdriver to push dashpot rod to fully extended position. Note engine speed with dashpot rod fully extended.
- Engine speed should be 1400-2200 RPM on A/T models or 2200-3000 RPM on M/T models. If engine speed is not within specification, rotate dashpot adjusting screw until proper RPM is obtained. See Fig 1.
- To check throttle body Vacuum Transmitting Valve (VTV) operation, operate engine at 3500 RPM. Release throttle. Ensure engine returns to proper idle speed in a few seconds. Reconnect control cables at throttle body.
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