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Throttle Opener: Turbo

  1. Start engine and warm engine to normal operating temperature. Ensure idle speed is within specification. See IDLE SPEED & MIXTURE in appropriate ADJUSTMENTS article. Shut engine off.
  2. Disconnect vacuum hose for throttle opener at throttle body and install plug on throttle body. See Fig 1. Start engine. Maintain engine speed at 2500 RPM. Release throttle and note engine speed. Engine speed should be 1300-1700 RPM.
  3. If engine speed is not within specification, rotate throttle opener adjusting screw until correct engine speed is obtained. See Fig 1. Reinstall vacuum hose on throttle body.
Fig 1: Locating Throttle Opener & Components (Turbo)
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