Fast Idle Setting
- Set fast idle adjusting cam to roller of throttle lever. Measure throttle valve angle. On manual transmission equipped vehicles, reference angle is 18.7 degrees from horizontal plane. On automatic transmission equipped vehicles, reference angle is 19 degrees from horizontal plane.
- To adjust, turn No. 1 fast idle adjusting screw. Separate fast idle adjusting cam from 1st idle lever. Using a screwdriver, pry open at least a .20" (5 mm) gap between fast idle cam and cold enrichment rod. See Fig 1. Allow gap to close.
- Flush out compensator water pipe with water. Apply vacuum to throttle positioner diaphragm and measure throttle angle. Determine throttle valve angle as is based upon water temperature. See WATER TEMPERATURE/THROTTLE VALVE ANGLE table. Once angle has been selected, adjust by turning No. 2 fast idle adjusting screw.
WATER TEMPERATURE/THROTTLE VALVE ANGLE
| Water Temperature | Throttle Valve Angle |
|---|---|
| 41°F (5°C) | 15.5° |
| 50°F (10°C) | 15.0° |
| 59°F (15°C) | 14.5° |
| 68°F (20°C) | 14.0° |
| 77°F (25°C) | 13.5° |